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\bibitem{Cimander_etal2011} Cimander, K. F., G{\"o}lz, J., Helms, T. M., Karle, C., Kr{\"o}ttinger, A. I., \& Poelke, T. (2011). \textit{Levomethadon : differenzierte Substitutionstherapie Opioidabh{\"a}ngiger} (Vol. 3). Stuttgart: Georg Thieme.

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