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. 2018 Jul 3;19:210. doi: 10.1186/s12891-018-2090-y

Fig. 3.

Fig. 3

A dot plot of absolute changes in serum 25(OH) D levels (ng/mL) at year one against baseline level (ng/mL). Person correlation coefficient = − 0.70 (95% CI, [− 0.54, − 0.85]; P < 0.001)