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Timpka T, Risto O, Borg K, Johansson J.Timpka T, et al.Scand J Med Sci Sports. 2007 Dec;17(6):636-40. doi: 10.1111/j.1600-0838.2006.00623.x. Epub 2007 Mar 1.Scand J Med Sci Sports. 2007.PMID: 17331084
Timpka T, Risto O, Björmsjö M.Timpka T, et al.Eur J Public Health. 2008 Feb;18(1):19-24. doi: 10.1093/eurpub/ckm050. Epub 2007 Jun 14.Eur J Public Health. 2008.PMID: 17569703
Risto O, Timpka T.Risto O, et al. Among authors: timpka t.Int J Inj Contr Saf Promot. 2007 Sep;14(3):189-91. doi: 10.1080/17457300701429009.Int J Inj Contr Saf Promot. 2007.PMID: 17729138No abstract available.