Bondarenko, Vladimir, Olga Goncharova, Andriy Minukhin, and Evgeniy Skornyakov. “Vitamin D, Testosterone, and Thyroid Status in Young Men at Different Seasons”. Problems of Endocrine Pathology 77, no. 3 (September 14, 2021). Accessed March 29, 2024. https://jpep.endocrinology.org.ua/index.php/1/article/view/617.