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Submitted on: 20 March 2018.
Revised on: 07 July 2018.
Accepted on: 23 August 2018.
___________________JOURNAL OF SPEECH LANGUAGE AND HEARING RESEARCH
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Submitted on: 04 December 2000.
Revised on: 21 March 2001.
Accepted on: 14 May 2001.
___________________JOURNAL OF SPEECH LANGUAGE AND HEARING RESEARCH