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Drug and Alcohol Dependence > 2003 > 69 > 1 > 43 - 49
Journal of Clinical Epidemiology > 1996 > 49 > 3 > 279-287
Drug and Alcohol Dependence > 2003 > 69 > 1 > 43 - 49
Journal of Clinical Epidemiology > 1996 > 49 > 3 > 279-287