Bashir, B., Shafiq, M., Nazir, A., Alam, M. A., Taimoor, A., & Munazza, B. (2019). Effectiveness of transdermal nitroglycerine compared to oral nifedipine in prevention of preterm labour. Pakistan Journal of Physiology, 15(4), 7–10. https://doi.org/10.69656/pjp.v15i4.1113