Submitted on: 06 January 2013.
Revised on: 10 February 2013.
Accepted on: 23 February 2013.
Spine Journal
Submitted on: 03 November 2002.
Revised on: 23 November 2002.
Accepted on: 16 December 2002.
Spine Journal---ELSEVIER SCIENCE INC
Submitted on: 18 June 2002.
Revised on: 25 June 2002.
Accepted on: 14 July 2002.
Spine Journal
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Submitted on: 25 April 2009.
Revised on: 26 May 2009.
Accepted on: 09 June 2009.
Spine Journal---ELSEVIER SCIENCE INC
Submitted on: 06 November 2001.
Revised on: 18 December 2001.
Accepted on: 05 January 2002.
Spine Journal
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