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.
Chuang YC, Chang WN, Lu CH.Chuang YC, et al. Among authors: chang wn.Changgeng Yi Xue Za Zhi. 1999 Dec;22(4):649-53.Changgeng Yi Xue Za Zhi. 1999.PMID: 10695216Review.
Huang CR, Chang WN, Lui CC, Wu HS, Liou CW.Huang CR, et al. Among authors: chang wn.Zhonghua Yi Xue Za Zhi (Taipei). 1997 Aug;60(2):105-8.Zhonghua Yi Xue Za Zhi (Taipei). 1997.PMID: 9360336