CALVERT, D G Fistula formation between the duodenum and colon. A report of three cases and a review of the condition. [electronic resource] - The British journal of surgery Sep 1960 - 136-9 p. digital Publication Type: Journal Article ISSN: 0007-1323 Standard No.: 10.1002/bjs.18004820807 doi Subjects--Topical Terms: Colonic NeoplasmsDuodenumFistulaGallbladderGallbladder NeoplasmsHumansIntestinal Fistula--etiology