title: Preoperative highly selective catheter localization of occult small-intestinal hemorrhage with methylene blue dye.
mesh_terms: D002404:Catheterization; D004396:Coloring Agents; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis*; D006801:Humans; D008751:Methylene Blue
chemical_list: D004396:Coloring Agents; D008751:Methylene Blue