“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, vol. 67, no. CD14, Sept. 2026, doi: 10.52163/yhc.v67iCD14.6459.