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.
Morgan TM, Barocas DA, Penson DF, Chang SS, Ni S, Clark PE, Smith JA Jr, Cookson MS.Morgan TM, et al. Among authors: penson df.Urology. 2012 Sep;80(3):632-40. doi: 10.1016/j.urology.2012.03.070. Epub 2012 Jul 13.Urology. 2012.PMID: 22795379
Barocas DA, Penson DF.Barocas DA, et al. Among authors: penson df.BJU Int. 2010 Aug;106(3):322-8. doi: 10.1111/j.1464-410X.2010.09467.x. Epub 2010 Jun 14.BJU Int. 2010.PMID: 20553251Free PMC article.Review.