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.
Meyer-Heim A, Landau K, Boltshauser E.Meyer-Heim A, et al.Praxis (Bern 1994). 2002 Jan 9;91(1-2):23-6. doi: 10.1024/0369-8394.91.1.23.Praxis (Bern 1994). 2002.PMID: 11824142German.