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Submitted on: 18 July 2003.
Revised on: 14 September 2003.
Accepted on: 02 November 2003.
___________________INTERNATIONAL JOURNAL OF LANGUAGE & COMMUNICATION DISORDERS
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Submitted on: 21 August 2015.
Revised on: 13 September 2015.
Accepted on: 30 September 2015.
___________________INTERNATIONAL JOURNAL OF LANGUAGE & COMMUNICATION DISORDERS