Vitamin D deficiency. Groups at risk need supplementation, and milk could be fortified.
Freaney
R
R
McKenna
M J
MJ
D000818:Animals; D019587:Dietary Supplements; D005526:Food, Formulated; D006801:Humans; D008892:Milk; D014807:Vitamin D / Q000008:administration & dosage*; D014808:Vitamin D Deficiency / Q000517:prevention & control*
D014807:Vitamin D