Ayub, Saima, Nudrat Ayub, Noreen Ayub, Rukhsana Karim, and Shamshad Begum. 2020. “COMPARISON OF EFFICACY OF NIFEDIPINE AND SALBUTAMOL IN THE TREATMENT OF PRETERM LABOUR”. Journal of Postgraduate Medical Institute 34 (2). https://jpmi.org.pk/index.php/jpmi/article/view/2661.