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.
Hsia N, Zon LI.Hsia N, et al. Among authors: zon li.Exp Hematol. 2005 Sep;33(9):1007-14. doi: 10.1016/j.exphem.2005.06.013.Exp Hematol. 2005.PMID: 16140148Free article.Review.