Submitted on: 09 June 2006.
Revised on: 17 July 2006.
Accepted on: 26 August 2006.
___________________Disability and Health Journal---ELSEVIER SCIENCE INC
Submitted on: 23 July 2005.
Revised on: 20 October 2005.
Accepted on: 31 October 2005.
___________________Disability and Health Journal---ELSEVIER SCIENCE INC
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Submitted on: 12 July 2007.
Revised on: 15 September 2007.
Accepted on: 12 November 2007.
___________________Disability and Health Journal---ELSEVIER SCIENCE INC
Submitted on: 13 July 2002.
Revised on: 02 November 2002.
Accepted on: 23 November 2002.
___________________Disability and Health Journal---ELSEVIER SCIENCE INC
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Submitted on: 23 June 2004.
Revised on: 28 July 2004.
Accepted on: 24 September 2004.
___________________Disability and Health Journal---ELSEVIER SCIENCE INC