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Syvänen K, Korhonen P, Partanen A, Aarnio P.Syvänen K, et al.Vasc Health Risk Manag. 2011;7:97-101. doi: 10.2147/VHRM.S17249. Epub 2011 Feb 23.Vasc Health Risk Manag. 2011.PMID: 21415923Free PMC article.