title: The routine upper gastrointestinal examination.
authors.forename: F M
authors.initials: FM
authors.lastname: Hall
mesh_terms: D001466:Barium Sulfate; D004064:Digestive System / Q000000981:diagnostic imaging*; D006801:Humans; D011029:Pneumoradiography
chemical_list: D001466:Barium Sulfate