2Hulka JF, Parker WH, Surrey MW, et al. Management of ovarian masses AAGL 1990 survey. J Reprod Med, 1992,37:599-602.
3Sokol AI, Chuang K, Milad ME Risk factors for conversion to laparotomy during gynecologic laparoscopy. J Am Assoc Gynecol Laparosc, 2003,10:469-473.
4Visco AG, Barber MD, Myers ER. Early physician experience with laparoscopically assisted vaginal hysterectomy and rates of surgical compllcations and conversion to laparotomy. Am J Obstet Gynecol, 2002,187 : 1008-1012.
