S. Sambath, T. Balasubramanian, S. Ilangovan, M. Aravazhi, and S. Shanmuganathan, “Awareness of contraception and the reasons for having more than two children: a survey among antenatal women”, Int J Reprod Contracept Obstet Gynecol, vol. 5, no. 4, pp. 959–961, Dec. 2016.