Sunil, V., and S. M. Valsan. “A Study on Risk Factors of Abortion in a Tertiary Care Hospital in Thrissur District, Kerala”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 9, no. 10, Sept. 2020, pp. 4118-22, doi:10.18203/2320-1770.ijrcog20204298.