Correction to: International Journal of Impotence Research (2010) 22, 211–219 (this issue); doi:10.1038/ijir.2010.4; published online 22 April 2010

After the article was published online, the authors discovered a mistake in one of the manufacturer's details:

Mentor (Santa Barbara, CA, USA)

should appear as

Augusta Medical System (Augusta, GA, USA)