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¢¨[2] Institute of Medicine (US) Committee to Review Dietary Reference Intakes for Vitamin D and Calcium; Editors: Ross AC, Taylor CL, Yaktine AL, Del Valle HB (2011) Dietary Reference Intakes for Calcium and Vitamin D, National Academies Press
http://www.ncbi.nlm.nih.gov/books/NBK56070/pdf/Bookshelf_ NBK56070.pdf

¢¨[3]Dawson-Hughes B, Mithal A, Bonjour JP, Boonen S, Burckhardt P, Fuleihan GEH, Josse RG, Lips P, Morales-Torres J, Yoshimura N (2010) IOF position statement: vitamin D recommendations for older adults. Osteoporos Int 21, 1151-1154

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¢¨[5]Libon F, Cavalier E, Nikkels AF.Skin color is relevant to vitamin D synthesis.Dermatology. 2013;227(3):250-4


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¢¨[7] Grant WB. An estimate of premature cancer mortality in the U.S. due to inadequate doses of solar ultraviolet-B radiation. Cancer 94:1867-1875, 2002


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¢¨[9] LeBlanc ES et al. Associations between 25-hydroxyvitamin D and weight gain in elderly women. Journal of Women¡Çs Health 21:1066-1073, 2012


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