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\bibitem{Berghmans_etal2009} {\textquotedblleft}\textit{Exposure assessment of a cyclist to PM$_{10}$ and ultrafine particles}{\textquotedblright}. Berghmans P, Bleux N, Int Panis L, Mishra VK, Torfs R, Van Poppel M, The science of the total environment \textbf{407}, 1286 (2009).   http://doi.org/10.1016/J.SCITOTENV.2008.10.041

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