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Protective face masks add significant dead space.
Elbl C, Brunner JX, Schier D, Junge A, Junge H. Elbl C, et al. Eur Respir J. 2021 Sep 2;58(3):2101131. doi: 10.1183/13993003.01131-2021. Print 2021 Sep. Eur Respir J. 2021. PMID: 33926971 Free article. No abstract available.
[Herbal drugs mimicking primary biliary cirrhosis].
Elbl C, Terracciano L, Stallmach TK, Reinhart WH, Jeker R. Elbl C, et al. Praxis (Bern 1994). 2012 Feb 1;101(3):195-8. doi: 10.1024/1661-8157/a000829. Praxis (Bern 1994). 2012. PMID: 22294306 German.