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.
Alcorn JL, Hammer RE, Graves KR, Smith ME, Maika SD, Michael LF, Gao E, Wang Y, Mendelson CR.Alcorn JL, et al. Among authors: mendelson cr.Am J Physiol. 1999 Aug;277(2):L349-61. doi: 10.1152/ajplung.1999.277.2.L349.Am J Physiol. 1999.PMID: 10444530