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  Indian J Med Microbiol
 

Figure 1: Monthly variation in mean levels of serum 25-hydroxyvitamin D (ng ml−1), total testosterone (ng ml−1) ( a ) and free testosterone (pg ml−1) ( b ) by ANCOVA adjusted for age.

Figure 1: Monthly variation in mean levels of serum 25-hydroxyvitamin D (ng ml−1), total testosterone (ng ml<sup>−1</sup>) ( a ) and free testosterone (pg ml<sup>−1</sup>) ( b ) by ANCOVA adjusted for age.