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.
Pavord ID, Birring SS, Berry M, Green RH, Brightling CE, Wardlaw AJ.Pavord ID, et al. Among authors: brightling ce.Eur Respir J. 2006 May;27(5):884-8. doi: 10.1183/09031936.06.00128105.Eur Respir J. 2006.PMID: 16707390Free article.Review.