title: Assessment of vitamin D in population-based studies. Preface.
authors.affiliation: Department of Social and Preventive Medicine, University at Buffalo, Buffalo, NY, USA. aemillen@buffalo.edu
authors.forename: Amy E
authors.initials: AE
authors.lastname: Millen
authors.forename: Lisa M
authors.initials: LM
authors.lastname: Bodnar
mesh_terms: D050071:Bone Density Conservation Agents / Q000008:administration & dosage / Q000097:blood*; D006801:Humans; D015596:Nutrition Assessment; D009752:Nutritional Status; D012307:Risk Factors; D012880:Skin Pigmentation; D013472:Sunlight; D014807:Vitamin D / Q000008:administration & dosage / Q000097:blood*; D014808:Vitamin D Deficiency / Q000453:epidemiology*
chemical_list: D050071:Bone Density Conservation Agents; D014807:Vitamin D