title: Creation of a second submucosal tunnel enabled successful per-oral endoscopic myotomy (POEM).
authors.affiliation: Department of Gastroenterology, Cleveland Clinic, Cleveland, Ohio. Electronic address: sanakam@ccf.org.
authors.forename: Madhusudhan R
authors.initials: MR
authors.lastname: Sanaka
authors.affiliation: Department of Gastroenterology, Cleveland Clinic, Cleveland, Ohio.
authors.forename: Prashanthi N
authors.initials: PN
authors.lastname: Thota
authors.affiliation: Department of Thoracic Surgery, Cleveland Clinic, Cleveland, Ohio.
authors.forename: Sudish C
authors.initials: SC
authors.lastname: Murthy
authors.affiliation: Department of Thoracic Surgery, Cleveland Clinic, Cleveland, Ohio.
authors.forename: Siva
authors.initials: S
authors.lastname: Raja
mesh_terms: D000069916:Endoscopic Mucosal Resection / Q000379:methods*; D004931:Esophageal Achalasia / Q000601:surgery*; D000071041:Esophageal Mucosa / Q000601:surgery*; D049630:Esophageal Sphincter, Lower / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D057605:Natural Orifice Endoscopic Surgery / Q000379:methods*