Erratum to: Int J Colorectal Dis (2016) 31:1517–1518

DOI 10.1007/s00384-016-2534-5

This article was unintentionally published twice in this journal, by the same authors. Following should be considered the version of record and be used for citation purposes:

Song P, Qin K, Chu X, Li S (2016) Different site, different clinical outcomes in perforated colorectal cancer? Int J Colorectal Dis 31(6):1483-1484. doi:10.1007/s00384-016-2529-2

 The duplicate “Song P, Qin K, Chu X, Li S (2016) Different site, different clinical outcomes in perforated colorectal cancer? Int J Colorectal Dis 31(6):1517-1518. doi:10.1007/s00384-016-2534-5” is to be ignored.

 The Editorial Office of International Journal of Colorectal Disease apologizes to the readers of the journal for not detecting the duplication during the publication process.