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.
Tsai HL, Chin TW, Chang JW, Liu CS, Wei CF.Tsai HL, et al. Among authors: liu cs.J Chin Med Assoc. 2006 May;69(5):240-4. doi: 10.1016/S1726-4901(09)70227-8.J Chin Med Assoc. 2006.PMID: 16835989Free article.