1. Cholecystocutaneous fistula;Gibson;Br J Clin Pract,1987
2. Spontaneous external biliary fistula uncomplicated by gallstones;Birch;Postgrad Med J,1991
3. Spontaneous cholecystocutaneous fistula secondary to calculous cholecystitis;Andley;Am J Gastroenterol,1996
4. External biliary fistula;Czerniak,1994
5. Internal biliary fistula and gallstone ileus;Morissey,1994