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.
Leung PS, Yao XQ, Chan HC, Fu LX, Wong PY.Leung PS, et al. Among authors: chan hc.Life Sci. 1998;62(5):461-8. doi: 10.1016/s0024-3205(97)01140-5.Life Sci. 1998.PMID: 9449237
Wong PY, Chan HC, Leung PS, Chung YW, Wong YL, Lee WM, Ng V, Dun NJ.Wong PY, et al. Among authors: chan hc.J Physiol. 1999 Feb 1;514 ( Pt 3)(Pt 3):809-20. doi: 10.1111/j.1469-7793.1999.809ad.x.J Physiol. 1999.PMID: 9882752Free PMC article.