title: Reply to Massey.
authors.forename: Wout O
authors.initials: WO
authors.lastname: Rohof
authors.forename: An
authors.initials: A
authors.lastname: Moonen
authors.forename: Guy E
authors.initials: GE
authors.lastname: Boeckxstaens
mesh_terms: D004931:Esophageal Achalasia / Q000628:therapy*; D004943:Esophagogastric Junction / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male