Fig. 3From: Age-, season- and gender-specific reference intervals of serum 25-hydroxyvitamin D3 for healthy children (0 ~ 18 years old) in Nanning area of ChinaGender and seasons differences for 25(OH)D levels in different age groups. A–D The vioplot showed the differential expression of 25(OH)D levels between different genders in different age groups. E–H The vioplot showed the differential expression of 25(OH)D levels between different seasons in different age groups. 25(OH)D 25-hydroxyvitamin D3Back to article page