Submitted on: 13 November 2003.
Revised on: 27 January 2004.
Accepted on: 26 February 2004.
___________________Journal of Pediatric Rehabilitation Medicine
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Submitted on: 26 July 2002.
Revised on: 19 November 2002.
Accepted on: 15 January 2003.
___________________Journal of Pediatric Rehabilitation Medicine