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Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article The University of Queensland, Centre for Clinical Research Excellence in Spinal Pain, Injury and Health, Brisbane Qld 4072, Australia *Corresponding author. Tel.: +61 7 3365 2008; fax: +61 7 3365 1284. E-mail address:email protected Submitted August 27, 2010; revised October 15, 2010; accepted October 18, 2010.
Hodges et al. (Sat,) studied this question.