Phan, Viet Hung, et al. “VITAMIN D DEFICIENCY AND FACTORS ASSOCIATED WITH THE SEVERITY OF DENGUE HEMORRHAGIC FEVER IN CHILDREN AT CA MAU OBSTETRICS AND PEDIATRICS HOSPITAL IN 2024-2026”. Cantho Journal of Medicine and Pharmacy, no. 100, July 2026, pp. 51-57, doi:10.58490/ctjump.2026i100.4848.