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.
MacIntyre NR.MacIntyre NR.Respir Care Clin N Am. 2001 Dec;7(4):599-610. doi: 10.1016/s1078-5337(05)70008-3.Respir Care Clin N Am. 2001.PMID: 11926758Review.
MacIntyre NR.MacIntyre NR.Respir Care Clin N Am. 2004 Sep;10(3):301-8, v. doi: 10.1016/j.rcc.2004.04.006.Respir Care Clin N Am. 2004.PMID: 15458728Review.