title: Anorectal manometry under anesthesia in the investigation of children with chronic constipation.
mesh_terms: D000758:Anesthesia; D001706:Biopsy; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D003248:Constipation / Q000209:etiology* / Q000628:therapy; D006221:Halothane; D006801:Humans; D007223:Infant; D007649:Ketamine; D008365:Manometry; D008531:Megacolon / Q000175:diagnosis
chemical_list: D007649:Ketamine; D006221:Halothane