Štrbac, T., Stojić, V., Frkanec, S. and Stanimirović, A. (2025) “Future Challenges of Vitamin D Deficiency: The Impact of Systemic Vitamin D Therapy on Serum Levels and Skin Diseases”, Journal of Applied Cosmetology. Italia, 43(2), pp. 47–54. doi: 10.56609/jac.v43i2.492.