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.
Sivkov IN, Bazhanov DI, Stepanyuk VS.Sivkov IN, et al. Among authors: stepanyuk vs.Sci Rep. 2017 Jun 5;7(1):2759. doi: 10.1038/s41598-017-02972-x.Sci Rep. 2017.PMID: 28584280Free PMC article.