Nat. Rev. Urol. 12, 281–288 (2015); Published online 02 June 2015 ; doi:10.1038/nrurol.2015.74

In the author line of the originally published article, the full initials of J. Stuart Wolf Jr were not included. Also, in the footnote of Table 2, “*Pre-operative stents present in all patients” should read “*Post-operative stents present in all patients”. These errors have been corrected for the HTML and PDF versions of the article.