Karmakar, M.K., Kar, S., Kumar, S.M., Chattopadhyay, S.K., Vaid, L.K. and Sen, S. 2018. A study of histological changes of human placenta in rural population of eastern India. International Journal of Reproduction, Contraception, Obstetrics and Gynecology. 7, 8 (Jul. 2018), 3280–3287. DOI:https://doi.org/10.18203/2320-1770.ijrcog20183331.