The need for more vitamin D.
Utiger
R D
RD
D000368:Aged; D006801:Humans; D007297:Inpatients; D008875:Middle Aged; D018673:Nutrition Policy; D014807:Vitamin D / Q000008:administration & dosage* / Q000031:analogs & derivatives / Q000097:blood; D014808:Vitamin D Deficiency
D014807:Vitamin D; C104450:25-hydroxyvitamin D