Diagnostic procedures in gastrointestinal hemorrhage.
D000792:Angiography; D001466:Barium Sulfate; D004724:Endoscopy / Q000379:methods; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D008722:Methods; D011877:Radionuclide Imaging; D013997:Time Factors
D001466:Barium Sulfate