title: Investigation of chronic upper gastrointestinal haemorrhage.
mesh_terms: D000740:Anemia / Q000175:diagnosis; D001158:Arteries; D001466:Barium Sulfate; D002760:Cholangiopancreatography, Endoscopic Retrograde; D004733:Enema; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis*; D006801:Humans; D010179:Pancreas / Q000098:blood supply; D010185:Pancreatic Fistula / Q000175:diagnosis; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography
chemical_list: D001466:Barium Sulfate