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\bibitem{Pfeiffer-Gerschel_etal2008} Pfeiffer-Gerschel, T., Kipke, I., Karachaliou, K., Lang, P., Spahlinger, P., \& Bartsch, G. (2008). \textit{2008 national report to the EMCDDA by the REITOX National Focal Point : Germany : new developments, trends and in-depth information on selected issues : drug situation 2007/2008}. National report to the EMCDDA by the REITOX National Focal Point. Berlin: Deutsche Referenzstelle f{\"u}r die Europ{\"a}ische Beobachtungsstelle f{\"u}r Drogen und Drogensucht (DBDD).

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