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.
Wu CH, Luo Y, Fei X, Chou YH, Chiou HJ, Wang HK, Lai YC, Lin YH, Tiu CM, Wang J.Wu CH, et al.J Chin Med Assoc. 2018 Apr;81(4):297-304. doi: 10.1016/j.jcma.2018.01.002. Epub 2018 Feb 21.J Chin Med Assoc. 2018.PMID: 29475813Free article.Review.