Lekic, Lana, and Bojan Pavlovic. “Topical Application of Vitamin D Cream in Particiants With Inflammatory Acne Due to Vitamin D Deficiency”. International Journal of Medical Science and Clinical Invention 11, no. 04 (April 12, 2024): 7087–7091. Accessed May 17, 2024. https://www.valleyinternational.net/index.php/ijmsci/article/view/4727.