Fresnais, David, Edvin Ingberg, Elvar Theodorsson, and Jakob O Ström. “Lack of Association in Acne and Salivary Testosterone”. Journal of Controversies in Biomedical Research 4, no. 1 (July 10, 2018): 1-5. Accessed July 9, 2020. https://jcbmr.com/index.php/jcbmr/article/view/25.