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Wolters M, Hickstein M, Flintermann A, Tewes U, Hahn A. Cognitive performance in relation to vitamin status in healthy elderly German women-the effect of 6-month multivitamin supplementation. Prev Med. 2005 Jul;41(1):253–9. doi: 10.1016/j.ypmed.2004.11.007. PMID: 15917019. |