Bayram, E.; Ayan, D.; Balcı, T.; Zeybek Aydoğan, K.; Inan, D. B.; Karabay, U. 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 2024, 8, 59-64.