Kaur, P., R. Bhatia, R. Sidhu, S. K. Bhopal, and A. Singh. “Sociodemographic and Seroprevalence Profile of Sexually Transmitted Infections (HIV, Hepatitis B, Hepatitis C and Syphilis) in Asymptomatic Pregnant Females”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 6, no. 10, Sept. 2017, pp. 4636-41, doi:10.18203/2320-1770.ijrcog20174455.