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Submitted on: 12 November 2011.
Revised on: 23 February 2012.
Accepted on: 30 March 2012.
___________________CLINICAL LINGUISTICS & PHONETICS
Submitted on: 25 January 2025.
Revised on: 31 March 2025.
Accepted on: 03 May 2025.
___________________CLINICAL LINGUISTICS & PHONETICS