Advanced technique for the treatment of chronic calculous pancreatitis using endoscopic ultrasound-guided pancreatic duct drainage - Okuno, Nozomi; Hara, Kazuo; Mizuno, Nobumasa; Hijioka, Susumu; Kuwahara, Takamichi; Fujita, Akashi; Niwa, Yasumasa (Endoscopy, 2017)