References
Overview of the different measurement time points for the INDV, STAD, CON, and SUF groups.Categorized distribution of 25(OH)D concentrations (n = 90) at baseline.25(OH)D concentrations at baseline (Mean (±SD) subject characteristics of the individualized supplementation group (INDV), standardized supplementation group (STAD), control group (CON), and sufficient group (SUF).Total 25(OH)D concentrations (M ± SD) in ng/mL at three measurement points of the individualized supplementation group (INDV), standardized supplementation group (STAD), control group (CON), and sufficient group (SUF).Notes, Pearson correlation coefficients of possible influence factors in the supplementation groups and control groups.Notes * 