We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleVitamin D status: United States, 2001-2006.AuthorsLooker AC; Johnson CL; Lacher DA; Pfeiffer CM; Schleicher RL; Sempos CTPublicationNCHS data brief, 2011, Issue 59, p1ISSN1941-4927Publication typearticle