We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleDemographic differences and trends of vitamin D insufficiency in the US population, 1988-2004.AuthorsGinde AA; Liu MC; Camargo CA JrPublicationArchives of internal medicine, 2009, Vol 169, Issue 6, p626ISSN1538-3679Publication typearticleDOI10.1001/archinternmed.2008.604