RETRACTION: Long-term outcomes of per-oral endoscopic myotomy in patients with achalasia with a minimum follow-up of 2 years: an international multicenter study (Retraction of Vol 85, Pg 927, 2017)

Ngamruengphong, S; Inoue, H; Chiu, Pwy; Yip, Hc; Bapaye, A; Ujiki, M; Patel, L; Desai, Pn; Hayee, B; Haji, A; Wong, Vwy; Perretta, S; Dorwat, S; Pioche, M; Roman, S; Rivory, J; Mion, F; Ponchon, T; Garros, A; Nakamura, J; Hata, Y; Balassone, V; Onimaru, M; Hajiyeva, G; Ismail, A; Chen, Yi; Bukhari, M; Haito-Chavez, Y; Kumbhari, V; Maselli, R; Repici, A; Khashab, Ma