title: Vitamin D deficiency.
mesh_terms: D001208:Asia / Q000208:ethnology; D002648:Child; D004641:Emigration and Immigration; D006801:Humans; D007225:Infant Food / Q000032:analysis; D007231:Infant, Newborn; D006113:United Kingdom; D014807:Vitamin D / Q000032:analysis; D014808:Vitamin D Deficiency / Q000453:epidemiology*
chemical_list: D014807:Vitamin D