[Rickets in children in Norway--an epidemic of concern for the Norwegian authorities?].
D002648:Child; D005062:European Union; D017408:Guidelines as Topic; D006801:Humans; D007223:Infant; D007225:Infant Food; D007227:Infant Nutritional Physiological Phenomena; D009664:Norway / Q000453:epidemiology; D012279:Rickets / Q000453:epidemiology / Q000209:etiology / Q000517:prevention & control; D014807:Vitamin D / Q000008:administration & dosage* / Q000506:poisoning; D014808:Vitamin D Deficiency / Q000150:complications / Q000453:epidemiology / Q000517:prevention & control