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\bibitem{Wang_etal1998} Wang, Z., B{\'e}roud, G., Cheng, M., \& Cheng, S. (1998). Drug treatment and public security in the People{\textquoteright}s Republic of China. In H. Klingemann, \& G. Hunt (Eds.), \textit{Drug treatment systems in an international perspective : drugs, demons, and delinquents} (pp. 253--262). Thousand Oaks: Sage Publications.

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