Dilawer, Sadia, Javed Iqbal, Tahir Angez Khan, Rubina Bakhtzada, Tahir Iqbal Khan, and Mehwish Naz. 2020. “Comparison of Salbutamol and Nifedipine in Treatment of Preterm Labour”. Pakistan Journal of Physiology 16 (1):10-13. https://pjp.pps.org.pk/index.php/PJP/article/view/1214.