Figure 2.

25(OH)D plotted against serum PTH concentration: a) winter, age under 50 years; b) summer, age under 50 years, c) winter, age 50 and above; d) summer, age 50 and above.

Kull et al. BMC Public Health 2009 9:22   doi:10.1186/1471-2458-9-22
Download authors' original image