Spirichev, V.B. β€œTo the Substantiation of the Joint Use of Vitamin D and the Rest of the 12 Vitamins Necessary for the Creation and Realization of the Vital Functions of Its Hormone-Active Form (The Vitamin D + 12 Vitamins Approach)”. Journal of Nutritional Therapeutics 2, no. 1 (March 31, 2013): 1–7. Accessed November 23, 2024. https://lifescienceglobal.com/pms/index.php/jnt/article/view/1027.