Figure 1From: High prevalence of vitamin D deficiency among children aged 1 month to 16 years in Hangzhou, China The mean serum 25(OH) D level changed according to seasons at each stage. *, P < 0.001 when compared with all other seasons at the same stage. ●, P < 0.05 when compared with spring and autumn at the same stage, ▲, P < 0.001 when compared with summer and autumn at the same stage.Back to article page