Connolly, James P R
Goldstone, Robert J
Burgess, Karl
Cogdell, Richard J
Beatson, Scott A
Vollmer, Waldemar
Smith, David G E
Roe, Andrew J
Article History
Received: 30 June 2014
Revised: 7 October 2014
Accepted: 13 November 2014
First Online: 19 December 2014
Change Date: 17 March 2014
Change Type: Correction
Change Details: This article has been corrected since Advance Online Publication and an erratum is also printed in this issue
Competing interests
: The authors have confirmed that they have no financial, personal or professional interests that could be construed to have influenced the paper.