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Submitted on: 02 July 2000.
Revised on: 23 September 2000.
Accepted on: 13 October 2000.
___________________Addiction Science & Clinical Practice
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Submitted on: 03 September 2022.
Revised on: 03 October 2022.
Accepted on: 07 November 2022.
___________________Addiction Science & Clinical Practice
Submitted on: 29 March 1998.
Revised on: 18 May 1998.
Accepted on: 14 June 1998.
___________________Addiction Science & Clinical Practice
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