See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/21535254 Reaching the Unreached: Targeting Hidden IDU Populations with Clean Needles via Known User Groups Article in Journal of psychoactive drugs · January 1992 DOI: 10.1080/02791072.1992.10471617 · Source: PubMed CITATIONS 61 READS 41 6 authors, including: Some of the authors of this publication are also working on these related projects: Improved access to addiction treatment for individuals with intellectual disabilities and substance use disorder View project Jean-Paul C Grund Charles University in Prague 70 PUBLICATIONS 1,212 CITATIONS SEE PROFILE Peter Blanken Brijder Addiction Treatment 77 PUBLICATIONS 1,165 CITATIONS SEE PROFILE Charles D Kaplan University of Southern California 126 PUBLICATIONS 3,034 CITATIONS SEE PROFILE Cas Barendregt IVO Addiction Research Institute 30 PUBLICATIONS 170 CITATIONS SEE PROFILE All content following this page was uploaded by Jean-Paul C Grund on 22 January 2015. The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original document and are linked to publications on ResearchGate, letting you access and read them immediately.