ten Berg, CSmit, Cvan Brussel, GCoutinho, RrivmPrins, M2025-03-192025-03-1920071769727810.1111/j.1360-0443.2007.01912.xhttps://rivm.openrepository.com/handle/10029/642157Full 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 usersArticleAddiction 2007; 102(9):1454-622025-03-19