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Sylla L, Bruce RD, Kamarulzaman A, Altice FL.Sylla L, et al. Among authors: kamarulzaman a.Int J Drug Policy. 2007 Aug;18(4):306-12. doi: 10.1016/j.drugpo.2007.03.001. Epub 2007 May 10.Int J Drug Policy. 2007.PMID: 17689379Free PMC article.