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), pp. 3280–3287. doi: 10.18203/2320-1770.ijrcog20183331.