1. Anderson RE, Woodward N, Diffenbaugh WG et al: Gallstone obstruction of the intestine. Surg Gynecol Obstet 125: 540, 1967
2. Augur NA Jr, Gracie WA Jr: Cholecystocolonic fistula associated with malabsorption. Am J Gastroenterol 53: 558, 1970
3. Buetow GW, Glaubitz JP, Crampton RS: Recurrent gallstone ileus. Surgery 54: 716, 1963
4. Byrne JJ: Biliary fistulas. Am J Surg 86: 181, 1953
5. Constant E, Turcotte JG: Choledochoduodenal fistula: The natural history and management of an unusual complication of peptic ulcer disease. Ann Surg 167: 220, 1968