Erratum to: World J Urol (2012) 30:861–867 DOI 10.1007/s00345-011-0819-4

This article was unintentionally published twice in this journal. The following should be considered the version of record and used for citation purposes: “Bangmin Han, Di Cui, Yifeng Jing, Yan Hong, Shujie Xia, Estrogen receptor β (ERβ) is a novel prognostic marker of recurrence survival in non-muscle-invasive bladder cancer potentially by inhibiting cadherin switch, World Journal of Urology, 30, 6, pages 861–867, 2012, 10.1007/s00345-011-0819-4.”

Springer apologizes to the readers of the journal for not detecting the duplication during the publication process.