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\bibitem{Latkin_etal1992} Latkin, C. A., Vlahov, D., Anthony, J. C., Kohn, S., \& Mandell, W. (1992). Needle-Cleaning Practices among Intravenous Drug Users Who Share Injection Equipment in Baltimore, Maryland. \textit{International journal of the addictions}, \textit{27}(6), 717--725.

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