W. B., A. B., R., S., & C. R., A. (2021). Changing trends of causative factors in antenatal mothers with bad obstetric history: a retrospective study. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 10(9), 3371–3374. https://doi.org/10.18203/2320-1770.ijrcog20213452