Okeke, T.C., Ezenyeaku, C.C., Ikeako, L.C., Okeke, K.O., Onyekwulu, F.A., Okafor, C.I. and Adiri, C.O. 2017. Zika virus and birth defects: an obstetric issue. International Journal of Reproduction, Contraception, Obstetrics and Gynecology. 5, 8 (Jan. 2017), 2488–2496. DOI:https://doi.org/10.18203/2320-1770.ijrcog20162620.