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.
Voss A, Lohff B.Voss A, et al. Among authors: lohff b.Wien Med Wochenschr. 2004 Sep;154(17-18):395-403. doi: 10.1007/s10354-004-0102-z.Wien Med Wochenschr. 2004.PMID: 15552226Review.German.