Palatsi, R., Hirvensalo, E., Liukko, P., Malmiharju, T., Mattila, L., Riihiluoma, P., & Ylöstalo, P. (1984). Serum total and unbound testosterone and sex hormone binding globulin (SHBG) in female acne patients treated with two different oral contraceptives. Acta Dermato-Venereologica, 64(6), 517–523. https://doi.org/10.2340/0001555564517523