By Wicks, S., Hammar, J. Heilig, M. & Wisén, O.
Reproduced with permission of the publishers of Substance Abuse – The article appeared in Vol.22, No. 4, December 2001: Http://www.wkap.nl/prod/j/0889-7077.
By Steve Wicks
Reproduced with permission of the publishers of Journal of Substance Use – The article appeared in Vol.9, No. 3-4, (2004): Http://www.tandf.co.uk/journals