[1]
Erkan, S., Öcal, P., Cepni, İsmail, Ilıkkan, B., Barbaros, M. and Madazlı, R. 2006. Spontaneous Twin Pregnancies Versus Twin Pregnancies Conceived with Assisted Reproductive Technologies. Gynecology Obstetrics & Reproductive Medicine. 12, 1 (Apr. 2006), 23–26.