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.
Lee TY, Hsu JB, Chang WC, Wang TY, Hsu PC, Huang HD.Lee TY, et al. Among authors: hsu pc, hsu jb.BMC Res Notes. 2009 Jun 23;2:111. doi: 10.1186/1756-0500-2-111.BMC Res Notes. 2009.PMID: 19549291Free PMC article.