N. Tuten, S. Acikgoz, Z. Mammadov, E. Malik, A. Tuten, and O. Guralp, “Is There a Role of 25-Hydroxy Vitamin D in the Pathogenesis of Mild and Moderate-to-Severe Endometriosis?”, Gynecol Obstet Reprod Med, vol. 27, no. 2, pp. 132–137, Aug. 2021.