title: Reply: a responsible approach to maintaining adequate serum vitamin D levels.
authors.forename: Laura A G
authors.initials: LA
authors.lastname: Armas
authors.forename: Christopher
authors.initials: C
authors.lastname: Huerter
authors.forename: Robert P
authors.initials: RP
authors.lastname: Heaney
mesh_terms: D004032:Diet; D019587:Dietary Supplements; D006801:Humans; D013472:Sunlight; D014807:Vitamin D / Q000097:blood* / Q000627:therapeutic use; D014808:Vitamin D Deficiency / Q000517:prevention & control*
chemical_list: D014807:Vitamin D