Sheikh Abdul Khaliq, Muhammad Saad, and Namra Fatima et al. “EVALUATION OF RISK FACTORS IN PROGRESSION OF OSTEOPOROSIS AMONG POSTMENOPAUSAL WOMEN IN KARACHI, PAKISTAN ”. Journal of University Medical & Dental College, Vol. 8, no. 2, June 2017, pp. 17-23, http://www.jumdc.com/index.php/jumdc/article/view/124.