ABDUL NASIR, J., M. IMRAN, and S. ARIF AHMED ZAIDI. “RISK FACTOR OF SEXUALLY TRANSMITTED INFECTIONS AMONG PAKISTANI MALES”. KHYBER MEDICAL UNIVERSITY JOURNAL, vol. 8, no. 2, Oct. 2016, pp. 66-71, https://www.kmuj.kmu.edu.pk/article/view/15098.