For citations:
Shapovalyants S.G., Ardasenov T.B., Pankov A.G., Budzinsky S.A., Veselova V.S. Difficult choledocholithiasis – result of overdue surgical treatment of gallstone disease. Russian Journal of Gastroenterology, Hepatology, Coloproctology. 2013;23(4):15-21. (In Russ.)