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.
Schwenkgrub J, Zaremba M, Mirowska-Guzel D, Kurkowska-Jastrzębska I.Schwenkgrub J, et al.Postepy Hig Med Dosw (Online). 2017 Mar 2;71(0):137-148.Postepy Hig Med Dosw (Online). 2017.PMID: 28258674Free article.Review.