PREVALENCE OF VITAMIN D DEFICIENCY AND CORRELATIONS BETWEEN PLASMA 25-HYDROXYVITAMIN D CONCENTRATIONS AND SELECTED BIOCHEMICAL PARAMETERS OF BONE METABOLISM AMONG FEMALE HEALTHCARE WORKERS AGED 45–55 YEARS. YHCĐ [Internet]. 2026 Sept. 19 [cited 2026 Sept. 19];67(CD14). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/6459