Iftikhar, Usma, and Nakhshab Choudhry. “Serum Levels of Androgens in Acne & their Role in Acne Severity: Serum Levels of Androgens in Acne”. Pakistan Journal of Medical Sciences 35, no. 1 (January 23, 2019). Accessed May 21, 2022. http://pjms.org.pk/index.php/pjms/article/view/131.