E. Bayram, D. Ayan, T. Balcı, K. Zeybek Aydoğan, D. B. Inan, and U. Karabay, “Vitamin D distribution by month, sex, and season in Turkey, Niğde province: A retrospective cohort study: D vitamin status in Niğde, Turkey”, J Surg Med, vol. 8, no. 3, pp. 59–64, Mar. 2024.