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.
Park IN, Kim DS, Shim TS, Lim CM, Lee SD, Koh Y, Kim WS, Kim WD, Jang SJ, Colby TV.Park IN, et al.Chest. 2007 Jul;132(1):214-20. doi: 10.1378/chest.07-0323. Epub 2007 Mar 30.Chest. 2007.PMID: 17400667
Song JW, Do KH, Jang SJ, Colby TV, Han S, Kim DS.Song JW, et al.Chest. 2013 May;143(5):1422-1429. doi: 10.1378/chest.11-2735.Chest. 2013.PMID: 23715088
Song JW, Do KH, Kim MY, Jang SJ, Colby TV, Kim DS.Song JW, et al.Chest. 2009 Jul;136(1):23-30. doi: 10.1378/chest.08-2572. Epub 2009 Mar 2.Chest. 2009.PMID: 19255290