Kucharczyk, Aleksandra, and Witold Tłustochowicz. “How Vitamin D Affects Immunity?”. Medycyna Faktow (J EBM) 11, no. 1(38) (March 31, 2018): 76-80. Accessed May 19, 2024. https://www.journalsmededu.pl/index.php/jebm/article/view/2106.