title: Double contrast barium meal examination: a comparison of two high density barium preparations, E-Z-HD and X-Opaque.
mesh_terms: D001466:Barium Sulfate; D005753:Gastric Mucosa / Q000000981:diagnostic imaging; D006801:Humans; D011859:Radiography; D013270:Stomach / Q000000981:diagnostic imaging*
chemical_list: D001466:Barium Sulfate