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\bibitem{Spegel_etal2004} Spegel, H., Simon, R., H{\"u}llinghorst, R., \& David-Spickermann, M. (2004). \textit{2004 national report to the EMCDDA by the REITOX National Focal Point : Germany : new developments, trends and in-depth information on selected issues : drug situation 2003}. 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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