Ahtar, N., P. Singh, N. Shahrukh, and A. Haider. “Antenatal Rescue Corticosteroids and Perinatal Outcome”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 10, no. 6, May 2021, pp. 2312-5, doi:10.18203/2320-1770.ijrcog20212168.