Nicolaou, Nayia
Renkema, Kirsten Y.
Bongers, Ernie M. H. F.
Giles, Rachel H.
Knoers, Nine V. A. M.
Article History
First Online: 18 August 2015
Change Date: 24 November 2015
Change Type: Correction
Change Details: In the HTML and PDF versions of this article originally published online, the black arrow was missing from the 'Posterior urethral valves' panel in Figure 1. This error has now been corrected in print and online.
Competing interests
: The authors declare no competing financial interests.