title: Physiologic norm for vitamin D supported, not challenged.
authors: From the Department of Health and Behavior Studies, Teachers College, Columbia University, New York, NY (jtw2117@columbia.edu).
authors: Tom
authors: T
authors: Weishaar
mesh_terms: D015652:25-Hydroxyvitamin D 2 / Q000097:blood*; D002112:Calcifediol / Q000097:blood*; D005260:Female; D006801:Humans; D008297:Male; D008954:Models, Biological; D012867:Skin / Q000528:radiation effects*; D012880:Skin Pigmentation; D014466:Ultraviolet Rays; D014808:Vitamin D Deficiency / Q000453:epidemiology*
chemical_list: D015652:25-Hydroxyvitamin D 2; D002112:Calcifediol