title: Achalasia: a need for more study.
authors.forename: C M
authors.initials: CM
authors.lastname: Farr
mesh_terms: D004931:Esophageal Achalasia / Q000503:physiopathology*; D004938:Esophageal Neoplasms / Q000517:prevention & control*; D006801:Humans; D011230:Precancerous Conditions / Q000503:physiopathology*