title: Increasing percentage of adenocarcinoma in primary carcinoma of the esophagus.
authors.forename: H D
authors.initials: HD
authors.lastname: Alpern
authors.forename: C
authors.initials: C
authors.lastname: Buell
authors.forename: J
authors.initials: J
authors.lastname: Olson
mesh_terms: D000230:Adenocarcinoma / Q000453:epidemiology*; D004938:Esophageal Neoplasms / Q000453:epidemiology*; D006801:Humans