Hetzel, Juergen, Michael Kreuter, Christian Kähler, Hans-Joachim Kabitz, Andreas Gschwendtner, Ralf Eberhardt, Ulrich Costabel, and Kaid Darwiche. 2021. “Bronchoscopic Performance of Bronchoalveolar Lavage in Germany – a Call for Standardization: A Request for BAL Standardization”. Sarcoidosis Vasculitis and Diffuse Lung Disease 38 (1):e2021003. https://doi.org/10.36141/svdld.v38i1.10628.