From: Vitamin D inadequacy in Belgian postmenopausal osteoporotic women
1. Spring
2. Summer
3. Fall
4. Winter
<30 nmol/L
15,3%
9,9%
17,5%
20,9%
<50 nmol/L
45,3%
39,1%
44,5%
43,0%
<75 nmol/L
90,8%
86,9%
85,3%
85,4%
<80 nmol/L
93,6%
89,4%
91,0%
90,2%