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.
Valentová K, Ulrichová J.Valentová K, et al. Among authors: ulrichova j.Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub. 2003 Dec;147(2):119-30.Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub. 2003.PMID: 15037892Review.