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.
Ramadas RA, Sadeghnejad A, Karmaus W, Arshad SH, Matthews S, Huebner M, Kim DY, Ewart SL.Ramadas RA, et al. Among authors: ewart sl.Eur Respir J. 2007 Mar;29(3):502-8. doi: 10.1183/09031936.00029506. Epub 2006 Nov 15.Eur Respir J. 2007.PMID: 17107994Free PMC article.