Submitted on: 05 June 2012.
Revised on: 01 July 2012.
Accepted on: 19 July 2012.
___________________Disability and Health Journal---ELSEVIER SCIENCE INC
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Submitted on: 18 June 2010.
Revised on: 17 July 2010.
Accepted on: 31 August 2010.
___________________Disability and Health Journal---ELSEVIER SCIENCE INC
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Submitted on: 22 February 2013.
Revised on: 03 June 2013.
Accepted on: 29 July 2013.
___________________Disability and Health Journal---ELSEVIER SCIENCE INC
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Submitted on: 11 April 2000.
Revised on: 13 July 2000.
Accepted on: 13 August 2000.
___________________Disability and Health Journal---ELSEVIER SCIENCE INC