Vitamin D Deficiency Knowledge and Associated Factors among Nursing Students at the University of Sulaimani, Iraq: A Cross-Sectional Study. UHD J SCI TECH [Internet]. 2026 Nov. 3 [cited 2026 Nov. 5];10(2):217-25. Available from: https://journals.uhd.edu.iq/index.php/uhdjst/article/view/1888