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.
Mannix ET, Manfredi F, Palange P, Dowdeswell IR, Farber MO.Mannix ET, et al. Among authors: manfredi f.Chest. 1992 Apr;101(4):910-5. doi: 10.1378/chest.101.4.910.Chest. 1992.PMID: 1555461
Mannix ET, Manfredi F, Farber MO.Mannix ET, et al. Among authors: manfredi f.Chest. 1999 Mar;115(3):708-13. doi: 10.1378/chest.115.3.708.Chest. 1999.PMID: 10084480