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\bibitem{Annaheim_etal2012} Annaheim, B., M{\"u}ller, M., Inglin, S., Wicki, M., Windlin, B., \& Gmel, G. (2012). \textit{Internetgebrauch und interaktive (Online-)Games : R{\'e}sum{\'e} d{\'e}taill{\'e}}. Z{\"u}rich; Lausanne: Sucht Schweiz.

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