References
- Barrenetxea G, Barinaga-Rementeria L, de Larruzea AL et al. 2007. Heterotopic pregnancy: two cases and a comparative review. Fertility and Sterility 87: 417 e9–e15.
- Chin HY, Chen FP, Wang CJ et al. 2004. Heterotopic pregnancy after in vitro fertilization–embryo transfer. International Journal of Gynaecology and Obstetrics 86:411–416.
- Felekis T, Akrivis C, Tsirkas P et al. 2014. Heterotopic triplet pregnancy after in vitro fertilization with favorable outcome of the intrauterine twin pregnancy subsequent to surgical treatment of the tubal pregnancy. Case Reports in Obstetrics and Gynecology 2014:356131.
- Guirgis RR, Craft IL. 1991. Ectopic pregnancy resulting from gamete intrafallopian transfer and in vitro fertilization. Role of ultrasonography in diagnosis and treatment. The Journal of Reproductive Medicine 36:793–796.
- JOINT SOGC-CFAS 2008. Guidelines for the number of embryos to transfer following in vitro fertilization No. 182, September 2006. International Journal of Gynaecology & Obstetrics 102:203–216.
- Li XH, Ouyang Y, Lu GX. 2013. Value of transvaginal sonography in diagnosing heterotopic pregnancy after in-vitro fertilization with embryo transfer. Ultrasound in Obstetrics and Gynecology 41:563–569.
- Pan HS, Chuang J, Chiu SF et al. 2002. Heterotopic triplet pregnancy: report of a case with bilateral tubal pregnancy and an intrauterine pregnancy. Human Reproduction 17:1363–1366.
- Sentilhes L, Bouet PE, Jalle T et al. 2009. Ultrasound diagnosis of spontaneous bilateral tubal pregnancy. The Australian and New Zealand Journal of Obstetrics and Gynaecology. 49:695–696.
- Sun SY, Araujo Júnior E, Elito Júnior J et al. 2012. Diagnosis of heterotopic pregnancy using ultrasound and magnetic resonance imaging in the first trimester of pregnancy: a case report. Case Reports in Radiology 2012: 317592.
- Tal J, Haddad S, Gordon N, Timor-Tritsch I. 1996. Heterotopic pregnancy after ovulation induction and assisted reproductive technologies: a literature review from 1971 to 1993. Fertility and Sterility 66:1–12.