Yerramilli, S., S. Fatima, and T. Surapaneni. “Duration of Labour and Severity of Postpartum Haemorrhage: a Case-Control Study”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 14, no. 2, Jan. 2025, pp. 438-43, doi:10.18203/2320-1770.ijrcog20250013.