U. Singh, S. Sonkar, P. Yadav, M. Dayal, V. Gupta, and S. Saxena, “Comparative evaluation of postpartum IUCD versus interval IUCD at a tertiary care centre in Allahabad, India”, Int J Reprod Contracept Obstet Gynecol, vol. 6, no. 4, pp. 1534–1538, Mar. 2017.