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.
Mahler DA, Ward J, Waterman LA, Baird JC.Mahler DA, et al. Among authors: waterman la.COPD. 2012 Aug;9(5):522-7. doi: 10.3109/15412555.2012.701678. Epub 2012 Aug 9.COPD. 2012.PMID: 22876883
Mahler DA, Waterman LA, Gifford AH.Mahler DA, et al. Among authors: waterman la.J Aerosol Med Pulm Drug Deliv. 2013 Jun;26(3):174-9. doi: 10.1089/jamp.2012.0987. Epub 2012 Oct 1.J Aerosol Med Pulm Drug Deliv. 2013.PMID: 23025451Clinical Trial.