title: The clean colon: whose responsibility?
mesh_terms: D001466:Barium Sulfate; D003106:Colon / Q000000981:diagnostic imaging*; D003365:Costs and Cost Analysis; D004733:Enema; D005243:Feces; D006801:Humans; D011859:Radiography; D011871:Radiology
chemical_list: D001466:Barium Sulfate