An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Koehler U, Becker HF, Gross V, Penzel T, Peter JH, Vogelmeier C.Koehler U, et al. Among authors: becker hf.Dtsch Med Wochenschr. 2003 May 16;128(20):1124-8. doi: 10.1055/s-2003-39257.Dtsch Med Wochenschr. 2003.PMID: 12748903Review.German.No abstract available.
Stammnitz A, Jerrentrup A, Penzel T, Peter JH, Vogelmeier C, Becker HF.Stammnitz A, et al. Among authors: becker hf.Eur Respir J. 2004 Aug;24(2):273-8. doi: 10.1183/09031936.04.00074304.Eur Respir J. 2004.PMID: 15332397Free article.Clinical Trial.