DOI:
        10.1055/s-00025476
      
      
        Endoscopy International Open
      
      
        
          
            Issue 01 ·
           Volume 07 ·
           January 2019
            
          
           DOI: 10.1055/s-008-42153 
          
          
          
  
    
      
    
  
  
        
        
  
  
    
  
  
  
  
  
    
  
  
  
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
  
    
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
        
          
            
              
              
              
                
                  
                    
                    
                      
                          
                          
                            
                            Thank you to reviewers
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                            
                          
                          
                          
                          
  
  
    
      
        E1
      
    
  
  
  
                      
                          
                          
                            
                            Original article
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                            
                          
                          
                          
                          
  
  
    
      
        E3
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Nagai, Kazumasa; 
              
            
          
            
              
              Katanuma, Akio; 
              
            
          
            
              
              Takahashi, Kuniyuki; 
              
            
          
            
              
              Yane, Kei; 
              
            
          
            
              
              Kin, Toshifumi; 
              
            
          
            
              
              Maguchi, Hiroyuki: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
    
   
                      
                          
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                          
                          
                          
  
  
    
      
        E9
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Kopczynska, Maja; 
              
            
          
            
              
              Smits, Stephanie; 
              
            
          
            
              
              Hopps, Rebecca; 
              
            
          
            
              
              Ramaraj, Rajeswari; 
              
            
          
            
              
              Warren, Neil; 
              
            
          
            
              
              Goddard, Stuart; 
              
            
          
            
              
              Ye, Xujiong; 
              
            
          
            
              
              Dolwani, Sunil: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
    
   
                      
                          
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                          
                          
                          
  
  
    
      
        E15
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Polmanee, Petcharee; 
              
            
          
            
              
              Hara, Kazuo; 
              
            
          
            
              
              Mizuno, Nobumasa; 
              
            
          
            
              
              Hijioka, Susumu; 
              
            
          
            
              
              Kuwahara, Takamichi; 
              
            
          
            
              
              Okuno, Nozomi; 
              
            
          
            
              
              Iwaya, Hiromichi; 
              
            
          
            
              
              Tajika, Masahiro; 
              
            
          
            
              
              Tanaka, Tsutomu; 
              
            
          
            
              
              Ishihara, Makoto; 
              
            
          
            
              
              Hirayama, Yutaka; 
              
            
          
            
              
              Ohnishi, Sachiyo; 
              
            
          
            
              
              Toriyama, Kazuhiro; 
              
            
          
            
              
              Bhanthomkomol, Patommatat; 
              
            
          
            
              
              Ito, Ayako; 
              
            
          
            
              
              Kuraoka, Naosuke; 
              
            
          
            
              
              Matsumoto, Shinpei; 
              
            
          
            
              
              Niwa, Yasumasa: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
    
   
                      
                          
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                          
                          
                          
  
  
    
      
        E36
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Kitakata, Hidekazu; 
              
            
          
            
              
              Itoh, Tohru; 
              
            
          
            
              
              Kinami, Shinichi; 
              
            
          
            
              
              Kawaura, Ken; 
              
            
          
            
              
              Hamada, Kazu; 
              
            
          
            
              
              Azukisawa, Sadafumi; 
              
            
          
            
              
              Kobayashi, Rika; 
              
            
          
            
              
              Kamai, Junji; 
              
            
          
            
              
              Kosaka, Takeo: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
    
   
                      
                          
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                          
                          
                          
  
  
    
      
        E53
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Kochhar, Rakesh; 
              
            
          
            
              
              Malik, Sarthak; 
              
            
          
            
              
              Reddy, Yalaka Rami; 
              
            
          
            
              
              Mallick, Bipadabhanjan; 
              
            
          
            
              
              Dhaka, Narendra; 
              
            
          
            
              
              Gupta, Pankaj; 
              
            
          
            
              
              Sinha, Saroj Kant; 
              
            
          
            
              
              Manrai, Manish; 
              
            
          
            
              
              Kochhar, Suman; 
              
            
          
            
              
              Wig, Jai D.; 
              
            
          
            
              
              Gupta, Vikas: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
    
   
                      
                          
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                          
                          
                          
  
  
    
      
        E62
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Mok, Shaffer R. S.; 
              
            
          
            
              
              Diehl, David L.; 
              
            
          
            
              
              Johal, Amitpal S.; 
              
            
          
            
              
              Khara, Harshit S.; 
              
            
          
            
              
              Confer, Bradley D.; 
              
            
          
            
              
              Mudireddy, Prashant R.; 
              
            
          
            
              
              Kovach, Alicia H.; 
              
            
          
            
              
              Diehl, Mia M.; 
              
            
          
            
              
              Kirchner, H. Lester; 
              
            
          
            
              
              Chen, Zong-Ming E.: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
    
   
                      
                          
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                          
                          
                          
  
  
    
      
        E74
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Mahadev, Srihari; 
              
            
          
            
              
              Jin, Zhezhen; 
              
            
          
            
              
              Lebwohl, Benjamin; 
              
            
          
            
              
              Rosenberg, Richard M.; 
              
            
          
            
              
              Garcia-Carrasquillo, Reuben J.; 
              
            
          
            
              
              Ramirez, Ivonne; 
              
            
          
            
              
              Freedberg, Daniel E.: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
    
   
                      
                          
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                          
                          
                          
  
  
    
      
        E90
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Hoff, Geir; 
              
            
          
            
              
              de Lange, Thomas; 
              
            
          
            
              
              Bretthauer, Michael; 
              
            
          
            
              
              Dahler, Stein; 
              
            
          
            
              
              Halvorsen, Fred-Arne; 
              
            
          
            
              
              Huppertz-Hauss, Gert; 
              
            
          
            
              
              Høie, Ole; 
              
            
          
            
              
              Kjellevold, Øystein; 
              
            
          
            
              
              Mortiz, Volker; 
              
            
          
            
              
              Sandvei, Per; 
              
            
          
            
              
              Seip, Birgitte; 
              
            
          
            
              
              Holme, Øyvind: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
        
      
    
   
                      
                          
                          
                            
                            Review
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                            
                          
                          
                          
                          
  
  
    
      
        E26
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Mangiavillano, Benedetto; 
              
            
          
            
              
              Montale, Amedeo; 
              
            
          
            
              
              Frazzoni, Leonardo; 
              
            
          
            
              
              Bianchetti, Mario; 
              
            
          
            
              
              Sethi, Amrita; 
              
            
          
            
              
              Repici, Alessandro; 
              
            
          
            
              
              Fuccio, Lorenzo: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
    
   
                      
                          
                          
                            
                            Case report
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                            
                          
                          
                          
                          
  
  
    
      
        E43
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Iwagami, Hiroyoshi; 
              
            
          
            
              
              Ishihara, Ryu; 
              
            
          
            
              
              Nakagawa, Kentaro; 
              
            
          
            
              
              Ohmori, Masayasu; 
              
            
          
            
              
              Matsuno, Kenshi; 
              
            
          
            
              
              Inoue, Shuntaro; 
              
            
          
            
              
              Arao, Masamichi; 
              
            
          
            
              
              Iwatsubo, Taro; 
              
            
          
            
              
              Nakahira, Hiroko; 
              
            
          
            
              
              Matsuura, Noriko; 
              
            
          
            
              
              Shichijo, Satoki; 
              
            
          
            
              
              Maekawa, Akira; 
              
            
          
            
              
              Takashi, Kanesaka; 
              
            
          
            
              
              Yamamoto, Sachiko; 
              
            
          
            
              
              Takeuchi, Yoji; 
              
            
          
            
              
              Higashino, Koji; 
              
            
          
            
              
              Uedo, Noriya; 
              
            
          
            
              
              Miyashiro, Isao: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
    
   
                      
                          
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                          
                          
                          
  
  
    
      
        E49
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Akabane, Shota; 
              
            
          
            
              
              Suda, Hiroaki; 
              
            
          
            
              
              Iijima, Hirokazu; 
              
            
          
            
              
              Kobayashi, Yukari; 
              
            
          
            
              
              Watanabe, Kazunao: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
    
   
                      
                          
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                          
                          
                          
  
  
    
      
        E83
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Eccles, John; 
              
            
          
            
              
              Wiebe, Edward; 
              
            
          
            
              
              D’Souza, Pernilla; 
              
            
          
            
              
              Sandha, Gurpal: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
    
   
                      
                          
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                          
                          
                          
  
  
    
      
        E87
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Karagyozov, Petko; 
              
            
          
            
              
              Tishkov, Ivan; 
              
            
          
            
              
              Georgieva, Zhenya; 
              
            
          
            
              
              Boeva, Irina; 
              
            
          
            
              
              Tzankov, Dimitar: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
    
   
                      
                          
                          
                            
                            Editorial
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                            
                          
                          
                          
                          
  
  
    
      
        E72
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
          
          
            
              
              Shah, Neil D.; 
              
            
          
            
              
              Baron, Todd H.: