[Determination of the point of origin of positive sputum with the Metras catheter].

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@article{Hoppe1951DeterminationOT, title={[Determination of the point of origin of positive sputum with the Metras catheter].}, author={Richard T. Hoppe and Wim Maassen}, journal={Der Tuberkulosearzt}, year={1951}, volume={5 8}, pages={468-70} }