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\bibitem{Tossmann_etal2009} Tossmann, H. - P., Leuschner, F., Simon, R., Hillebrand, J., \& Pirona, A. (2009). \textit{Internet-based drug treatment interventions : best practice and applications in EU member states}  (European Monitoring Centre for Drugs and Drug Addiction, Ed.). Insights, 10. Lisbon; Luxembourg: European Monitoring Centre for Drugs and Drug Addiction (EMCDDA); Office for Official Publications of the European Communities.

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