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.
Nupponen N, Visakorpi T.Nupponen N, et al. Among authors: visakorpi t.Eur Urol. 1999;35(5-6):351-4. doi: 10.1159/000019907.Eur Urol. 1999.PMID: 10325488Review.