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.
Zinchenko RA, El'chinova GI, Balanovskaia EV, Nurbaev SD, Ginter EK.Zinchenko RA, et al.Vestn Ross Akad Med Nauk. 2000;(5):5-11.Vestn Ross Akad Med Nauk. 2000.PMID: 10881655Russian.