Figure 3.

Seasonal variation in 25-OH vitamin D. Box-plots of 25-OH vitamin D by season. Levels of serum 25-OH D did not vary with respect to the season in which they were drawn (pā€‰=ā€‰0.66).

Bose et al. Nutrition Journal 2013 12:81   doi:10.1186/1475-2891-12-81
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