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.
Kuo CC, Ku SC, Wang JT, Tsai CW, Wu VC, Chou WC.Kuo CC, et al. Among authors: tsai cw.Yonsei Med J. 2010 May;51(3):472-4. doi: 10.3349/ymj.2010.51.3.472.Yonsei Med J. 2010.PMID: 20376908Free PMC article.