“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”. 2026. Vietnam Journal of Community Medicine 67 (CD14). https://doi.org/10.52163/yhc.v67iCD14.6459.