Endoscopic technique for closure of a large gastric tube perforation by using endoclips with line-assisted complete closure - Ominami, Masaki; Nagami, Yasuaki; Tanaka, Chieko; Sakai, Taishi; Fukunaga, Shusei; Watanabe, Toshio; Fujiwara, Yasuhiro (Endoscopy, 2019)