Shah, P. T., M. A. Bhagat, R. V. Patel, and S. M. Yadav. “Cardiac Diseases in Pregnancy and Its Feto-Maternal Outcome”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 7, no. 11, Oct. 2018, pp. 4747-51, doi:10.18203/2320-1770.ijrcog20184541.