Correction: Feasibility of newly designed rotatable sphincterotome for endoscopic sphincterotomy (with video) - Yasuki Hori; Kazuki Hayashi; Itaru Naitoh; Fumihiro Okumura; Kaiki Anbe; Katsuyuki Miyabe; Atsuyuki Hirano; Hiroki Takada; Naruomi Jinno; Michihiro Yoshida; Akihisa Kato; Kenta Kachi; et al. (Endoscopy International Open)