title: Idiopathic achalasia: are there different types?
authors.forename: D O
authors.initials: DO
authors.lastname: Castell
mesh_terms: D004931:Esophageal Achalasia / Q000188:drug therapy / Q000209:etiology / Q000503:physiopathology; D004943:Esophagogastric Junction / Q000503:physiopathology; D006801:Humans; D009543:Nifedipine / Q000627:therapeutic use
chemical_list: D009543:Nifedipine