title: A prospective study of esophageal squamous cell carcinoma in achalasia.
authors: J E
authors: JE
authors: Onken
authors: J
authors: J
authors: Baillie
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002294:Carcinoma, Squamous Cell / Q000150:complications*; D004931:Esophageal Achalasia / Q000150:complications*; D004938:Esophageal Neoplasms / Q000150:complications*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies