Rickets prevention.
Smith
P J
PJ
D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D012279:Rickets / Q000517:prevention & control* / Q000628:therapy; D014807:Vitamin D / Q000008:administration & dosage*
D014807:Vitamin D