Faiz Rasul, H. M., Q. Shahzad, S. Kanwal, A. Aslam, F. Shaukat, and I. Inam. “Comparison of Fetomaternal Outcomes in Nifedipine Combined With Sildenafil Citrate Versus Nifedipine Alone for the Management of Threatened Preterm Labour: Fetomaternal in Nifedipine Combined With Sildenafil Citrate Versus Nifedipine”. Pakistan Journal of Health Sciences, vol. 5, no. 11, Nov. 2024, pp. 248-52, doi:10.54393/pjhs.v5i11.2111.