Qamar, S., P. Aslam, T. Rasheed, H. Jaffery, Q. Mushtaq, and S. Tufail. “COMPARISON OF CERVICAL CERCLAGE AND VAGINAL PROGESTERONE IN CERVICAL INSUFFICIENCY: OUR EXPERIENCE AT CMH LAHORE”. PAFMJ, Vol. 70, no. 1, Feb. 2020, pp. 185-89, https://pafmj.org/index.php/PAFMJ/article/view/3960.