title: Upper gastrointestinal tract.
authors: Department of Gastroenterology, Kyoto First Red Cross Hospital, Japan.
authors: S
authors: S
authors: Shimizu
authors: M
authors: M
authors: Tada
authors: K
authors: K
authors: Kawai
mesh_terms: D004378:Duodenal Diseases / Q000000981:diagnostic imaging*; D004935:Esophageal Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D013272:Stomach Diseases / Q000000981:diagnostic imaging*; D014463:Ultrasonography