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 L, Li BH, Wang YY, Wang CY, Zi H, Weng H, Huang Q, Zhu YJ, Zeng XT.Wu L, et al.Mil Med Res. 2019 Nov 13;6(1):34. doi: 10.1186/s40779-019-0223-8.Mil Med Res. 2019.PMID: 31718713Free PMC article.