Karolina Osińska, Marcin Schulz, Agnieszka Morawa, Dawid Studziński, Anna Kołcz, Michał Kulczak. IMMUNOMODULATORY EFFECTS OF VITAMIN D AND ITS STATUS IN PATIENTS WITH AUTOIMMUNE DISEASES. IJITSS. 2026;1(1(49). doi:10.31435/ijitss.1(49).2026.4611