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.
Pietkiewicz M, Nienartowicz E, Sokołowska-Dąbek D, Zaleska-Dorobisz U, Gamian A, Pietkiewicz J.Pietkiewicz M, et al.Postepy Hig Med Dosw (Online). 2010 Nov 10;64:555-67.Postepy Hig Med Dosw (Online). 2010.PMID: 21109708Free article.Review.Polish.