[On prolonged rickets prevention].
D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D012279:Rickets / Q000517:prevention & control*; D013997:Time Factors; D014807:Vitamin D / Q000008:administration & dosage / Q000627:therapeutic use
D014807:Vitamin D
Zur protrahierten Rachitisprophylaxe.