1Ophir E,Singer-Jordan J, Oettinger M, et al. Uterine artery embolization for management of interstitial twin ectopie pregnaney: case report [J]. Hum Reprod,2004,19(8) : 1774 - 1777.
2Halperin R, Vaknin Z, Schneider D, et al. Conservative management of ectopic pregnancy with fetal cardiac activity by combined local (sonographically guided) and systemic injection of methotrexate [J]. Gynecol Obstet Invest,2003,56(3) : 148 - 151.
3Clayton HB,Schieve LA, Peterson HB,et al.Risk of ectopic pregnancy among women who underwent ART, United States, 1999-2001 [J]. Obstet Gynecol,2006,107(3) : 595 - 604.
4Clayton HB, Schieve LA, Peterson HB, et al. A comparison of heterotopic and intrauterine-only pregnancy outcomes after assisted reproductive technologies in the United States from 1999 to 2002 [J] .Fertil Steril,2007, 87:303 - 309.
5Pope CS, Cook EKD, Amy M, et al, Influence of embryo transfer depth on invitro fertilization and embryo transfer outcomes [J] .Fertil Steril, 2004, 81(1): 51-58.
