Submitted on: 16 March 2001.
Revised on: 24 April 2001.
Accepted on: 21 May 2001.
___________________Journal of Substance Use---TAYLOR & FRANCIS INC
Submitted on: 03 February 2003.
Revised on: 25 February 2003.
Accepted on: 28 March 2003.
___________________Journal of Substance Use---TAYLOR & FRANCIS INC
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Submitted on: 20 September 2019.
Revised on: 25 October 2019.
Accepted on: 09 December 2019.
___________________Journal of Substance Use---TAYLOR & FRANCIS INC
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Submitted on: 23 October 2003.
Revised on: 05 January 2004.
Accepted on: 30 January 2004.
___________________Journal of Substance Use---TAYLOR & FRANCIS INC
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