UrologyVolume 79, Issue 4, April 2012, Pages A7-A11Table of ContentsAuthor links open overlay panelShow moreShareCitehttps://doi.org/10.1016/S0090-4295(12)00231-2Previous article in issueNext article in issueRecommended articlesCited by (0)View AbstractCopyright © 2012 Published by Elsevier Inc. All rights reserved.