1. Berberoglu M, Dilek ON, Ercan F, Kati I, Ozmen M (1998) The effect of CO2 insufflation rate on the postlaparoscopic shoulder pain. J Laparoendose Adv Surg Tech 8: 273–277
2. Bongard FS, Pianim NA, Leighton TA, Dubecz S, Davis IP, Lippmann M, Klein S, Liu SY (1993) Helium insufflation for laparoscopic operation. Surg Gynecol Obstet 177: 140–146
3. Bossuto E, Bonatti L, Schieroni R, Vilata E, Bacino A, Galliano R, Lorenzini L, Borello G, Butera F, Massaioli N (2000) [Gasless laparoscopic cholecystectomy: our experience with 130 cases compared with 450 cases treated with the CO2 technique]. Minerva Chir 55: 201–203
4. Chamberlain G (1984) The recovery of gases insufflated at laparoscopy. Br J Obstet Gynaecol 91: 367–370
5. Corsale I, Fantini C, Gentili C, Sapere P, Garruto O, Coate R (2000) [Peritoneal innervation and post-laparoscopic course: role of CO2]. Minerva Chir 55: 205–210