Submitted on: 30 December 2002.
Revised on: 13 March 2003.
Accepted on: 25 April 2003.
___________________JDR Clinical & Translational Research
Submitted on: 25 November 2003.
Revised on: 01 March 2004.
Accepted on: 08 April 2004.
___________________JDR Clinical & Translational Research
Submitted on: 08 December 2001.
Revised on: 05 April 2002.
Accepted on: 30 April 2002.
___________________JDR Clinical & Translational Research
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Submitted on: 12 November 2010.
Revised on: 07 March 2011.
Accepted on: 09 April 2011.
___________________JDR Clinical & Translational Research
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