Surgical procedures used: choledochotomy: 44 (48, 9%), left lateral sectorectomy with choledochotomy and cholecystectomy: 16 (17, 8%), ERCP with ES: 11 (12, 2%), choledochotomy with choledochojejunostomy: 7 (7, 8%), left lateral sectorectomy: 5 (5, 6%), choledochotomy with hepatotomy: 5 (5, 6%).