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How and Where to Find NPS Users: a Comparison of Methods in a Cross-National Survey Among Three Groups of Current Users of New Psychoactive Substances in Europe

health risks and to improve access to drug services and care. Notes Compliance with Ethical Standards Disclosure of Interest Dirk Korf, Annemieke Benschop, Bernd Werse, Gerrit Kamphausen, Katalin

Health and Social Problems Associated with Recent Novel Psychoactive Substance (NPS) Use Amongst Marginalised, Nightlife and Online Users in Six European Countries

Claire Van Hout Annemieke Benschop Michal Bujalski Katarzyna D?browska Zsolt Demetrovics Katalin Felvinczi Evelyn Hearne Susana Henriques Zsuzsa Kal? Gerrit Kamphausen Dirk Korf Joana Paula Silva ?ukasz