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.
Bockisch A, Brandt-Mainz K, Görges R, Müller S, Stattaus J, Antoch G.Bockisch A, et al.Acta Med Austriaca. 2003;30(1):22-5. doi: 10.1046/j.1563-2571.2003.02045.x.Acta Med Austriaca. 2003.PMID: 12558562