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Alexy U, Kersting M, Sichert-Hellert W.Alexy U, et al.Int J Vitam Nutr Res. 2003 Oct;73(5):335-42. doi: 10.1024/0300-9831.73.5.335.Int J Vitam Nutr Res. 2003.PMID: 14639796Free article.