An international multicenter study evaluating the clinical efficacy and safety of per-oral endoscopic myotomy in octogenarians

Chen, Yi; Inoue, H; Ujiki, M; Draganov, Pv; Colavita, P; Mion, F; Romanelli, J; Chiu, P; Balassone, V; Patel, L; Abbas, A; Yang, D; Dunst, C; Pioche, M; Roman, S; Rivory, J; Ponchon, T; Desilets, D; Maselli, R; Onimaru, M; Nakamura, J; Hata, Y; Hajiyeva, G; Ismail, A; Ngamruengphong, S; Bukhari, M; Chavez, Yh; Kumbhari, V; Repici, A; Khashab, Ma