TY - JOUR AU - Pisello, F; Geraci, G; Li Volsi, F TI - Permanent stenting in “unextractable” common bile duct stones in high risk patients. A prospective randomized study comparing two different stents JO - Langenbecks Arch Surg VL - 393 PY - 2008 DO - 10.1007/s00423-008-0388-1 L3 - PubMed-ID: 18679709 SP - 857 EP - 863 N1 - et al. ER -