title: Diagnostic procedures in colo-rectal cancer: barium enema or colonoscopy? Or both?
mesh_terms: D001466:Barium Sulfate; D003110:Colonic Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D003113:Colonoscopy / Q000009:adverse effects; D003951:Diagnostic Errors; D006801:Humans; D008875:Middle Aged; D011859:Radiography; D012004:Rectal Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging
chemical_list: D001466:Barium Sulfate