Singh, R. K., S. Anne, and S. R. P. “Changing Trends of Blood Transfusion Requirement in Obstetrics and Gynaecology”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 7, no. 5, Apr. 2018, pp. 2018-22, doi:10.18203/2320-1770.ijrcog20181949.