8Akrivis C, Varras M, Kyparos J, et al. Early ultrasonographic diagnosis of unruptured interstitial pregnancy: a case report and review of the literature. Clin Exp Obstet Gynecol,2003, 30: 60-64.
9Andersen BB. Successful intrauterine term pregnancy after resection of corneal pregnancy. Eur J Obstet Gynecol Reprod Biol, 1999, 84: 99-100.