International multicenter experience with peroral endoscopic myotomy for the treatment of spastic esophageal disorders refractory to medical therapy (with video)

Khashab, Ma; Messallam, Aa; Onimaru, M; Teitelbaum, En; Ujiki, Mb; Gitelis, Me; Modayil, Rj; Hungness, Es; Stavropoulos, Sn; El Zein, Mh; Shiwaku, H; Kunda, R; Repici, A; Minami, H; Chiu, Pw; Ponsky, J; Kumbhari, V; Saxena, P; Maydeo, Ap; Inoue, H