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Askim T, Dahl AE, Aamot IL, Hokstad A, Helbostad J, Indredavik B.Askim T, et al. Among authors: hokstad a.Physiother Res Int. 2014 Sep;19(3):129-39. doi: 10.1002/pri.1573. Epub 2013 Dec 4.Physiother Res Int. 2014.PMID: 24375978Clinical Trial.