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(en) Grant WB, Holick MF. Benefits and requirements of vitamin D for optimal health: a review. (2005) Altern Med Rev 10:94-111. PMID15989379, vrije toegang.
(en) Hyppönen E, Power C. Hypovitaminosis D in British adults at age 45 y: nationwide cohort study of dietary and lifestyle predictors. (2007) Am J Clin Nutr 85:860-868. PMID17344510, vrije toegang. Persbericht: Vitamin D deficiency more common than thought. Uit dit onderzoek blijkt dat tijdens de winter en lente de helft van de (blanke) Britten vitamine D-deficiënt is (serumwaarden minder dan 40 nmol/l).
(en) Holick MF, MacLaughlin JA, Clark MB, Holick SA, Potts JT, Anderson RR, Blank IH, Parrish JA, Elias P (1980). Photosynthesis of previtamin D3 in human skin and the physiologic consequences. Science210 (4466): 203–5. ISSN: 0036-8075. PMID6251551. DOI: 10.1126/science.6251551.
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