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Ommundsen Y, Page A, Ku PW, Cooper AR.Ommundsen Y, et al. Among authors: cooper ar.Int J Behav Nutr Phys Act. 2008 May 19;5:29. doi: 10.1186/1479-5868-5-29.Int J Behav Nutr Phys Act. 2008.PMID: 18489736Free PMC article.