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.
Thomas AW, Cannon A, Bartlett E, Ellis-Jones J, Abrams P.Thomas AW, et al. Among authors: abrams p.J Urol. 2005 Nov;174(5):1887-91. doi: 10.1097/01.ju.0000176740.76061.24.J Urol. 2005.PMID: 16217330