title: The rule of three in esophageal dilation.
authors.forename: D F
authors.initials: DF
authors.lastname: Langdon
mesh_terms: D002404:Catheterization / Q000295:instrumentation / Q000379:methods*; D004940:Esophageal Stenosis / Q000628:therapy*; D004945:Esophagoscopy / Q000379:methods; D006801:Humans; D013997:Time Factors