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\bibitem{deBacker_etal2010} {\textquotedblleft}\textit{Validation of computational fluid dynamics in CT-based airway models with SPECT/CT1}{\textquotedblright}. de Backer JW, Vos WG, Vinchurkar SC, Claes R, Drollmann A, Wulfrank D, Parizel PM, Germonpr{\'e} P, de Backer W, Radiology \textbf{257}, 854 (2010).   http://doi.org/10.1148/radiol.10100322

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