Preventing nutritional rickets.
D002648:Child; D002675:Child, Preschool; D003535:Cyprus; D005260:Female; D006801:Humans; D007194:India / Q000208:ethnology; D007223:Infant; D007227:Infant Nutritional Physiological Phenomena; D008131:London; D008297:Male; D009549:Nigeria; D010154:Pakistan / Q000208:ethnology; D012279:Rickets / Q000209:etiology / Q000517:prevention & control*