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Submitted on: 27 May 2008.
Revised on: 18 June 2008.
Accepted on: 17 July 2008.
___________________Chiropractic & Manual Therapies
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Submitted on: 27 September 2009.
Revised on: 15 December 2009.
Accepted on: 01 February 2010.
___________________Chiropractic & Manual Therapies
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