Laparoscopic cholecystectomy in cirrhotics: a prospective randomized study comparing the conventional diathermy and the harmonic scalpel for gallbladder dissection. - Bessa SS; Abdel-Razek AH; Sharaan MA; Bassiouni AE; El-Khishen MA; El-Kayal el-SA (Journal of laparoendoscopic & advanced surgical techniques. Part A, 2011)