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.
Silvestri GA, Feller-Kopman D, Chen A, Wahidi M, Yasufuku K, Ernst A.Silvestri GA, et al. Among authors: chen a.Chest. 2012 Dec;142(6):1636-1644. doi: 10.1378/chest.12-2326.Chest. 2012.PMID: 23208336Review.
Perrino CM, Wang JF, Chen AC, Collins BT.Perrino CM, et al.Diagn Cytopathol. 2014 Nov;42(11):950-5. doi: 10.1002/dc.23024. Epub 2013 Aug 1.Diagn Cytopathol. 2014.PMID: 23913752