TY - JOUR A1 - Van Den Berg, C. A1 - Smit, C. A1 - Van Brussel, G. A1 - Coutinho, R. A1 - Prins, M. T1 - Full participation in harm reduction programmes is associated with decreased risk for human immunodeficiency virus and hepatitis C virus: evidence from the Amsterdam Cohort Studies among drug users Y1 - 2007 DO - 10.1111/j.1360-0443.2007.01912.x JF - Addiction (Abingdon, England) VL - 102 IS - 9 ER -