Wulan, I. G. K., A. N. Hidayati, and H. Sukanto. “Profile of Serum Insulin-Like Growth Factor-1 Levels in Patients With Acne Vulgaris”. Berkala Ilmu Kesehatan Kulit Dan Kelamin, vol. 28, no. 2, Oct. 2016, pp. 104-12, doi:10.20473/bikk.V28.2.2016.104-112.