Endoscopic closure using a dedicated device following gastric endoscopic submucosal dissection: Multicenter, prospective, observational pilot study - Kazuo Shiotsuki; Kohei Takizawa; Yohei Nose; Yuki Kondo; Hitoshi Homma; Taisuke Inada; Mao Daikaku; Kosuke Maehara; Shin-ichiro Fukuda; Hironori Aoki; Yorinobu Sumida; Hirotada Akiho; et al. (Endoscopy International Open)