HL, P., and R. Krishnegowda. “Prospective Study of Association of Uterine Atonicity and Serum Calcium Levels”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 5, no. 7, Feb. 2017, pp. 2221-3, doi:10.18203/2320-1770.ijrcog20162097.