Predictive Factors for Difficult Laparoscopic Cholecystectomies in Acute Cholecystitis oleh Paul Lorin Stoica, Dragos Serban, Dan Georgian Bratu, Crenguta Sorina Serboiu, Daniel Ovidiu Costea, Laura Carina Tribus, Catalin Alius, Dan Dumitrescu, Ana Maria Dascalu, Corneliu Tudor, Laurentiu Simion, Mihail Silviu Tudosie, Meda Comandasu, Alexandru Cosmin Popa, Bogdan Mihai Cristea