Singh, S., Tyagi, P., Anand, D., Gupta, N. and Gupta, R. 2023. A comparative study of efficacy and side effects of nifedipine with nifedipine along with dydrogesterone in management of preterm labor. International Journal of Reproduction, Contraception, Obstetrics and Gynecology. 12, 6 (May 2023), 1670–1674. DOI:https://doi.org/10.18203/2320-1770.ijrcog20231534.