Main clinical and biochemical characteristics of the VitDmet study participants at baseline and their changes during the study.

*all participants were asked to keep their diet and other lifestyle habits unchanged during the study and were allowed to take up to 20 µg vitamin D3/day.
**random assignment of the participants to the three groups.
Means and standard deviations for the baseline characteristics before intervention or mean parameter change with 95% confidence interval after the intervention are indicated for the three arms of the study. The detailed data of all 71 study participants are shown in Table S2 in File S2.