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.
Chaudhary NI, Roth GJ, Hilberg F, Müller-Quernheim J, Prasse A, Zissel G, Schnapp A, Park JE.Chaudhary NI, et al.Eur Respir J. 2007 May;29(5):976-85. doi: 10.1183/09031936.00152106. Epub 2007 Feb 14.Eur Respir J. 2007.PMID: 17301095Free article.