Margetts, Jane
Ogle, Laura F
Chan, Stephen L
Chan, Anthony W H
Chan, K C Allen
Jamieson, David
Willoughby, Catherine E
Mann, Derek A
Wilson, Caroline L
Manas, Derek M
Yeo, Winnie
Reeves, Helen L
Article History
Received: 1 July 2017
Revised: 4 September 2017
Accepted: 9 October 2017
First Online: 9 November 2017
Change Date: 23 January 2018
Change Type: Update
Change Details: This paper was modified 12 months after initial publication to switch to Creative Commons licence terms, as noted at publication
Competing interests
: The authors of this manuscript declare the following interests or involvements that have a bearing on this paper. In particular, (1) there has been no undeclared financial support from any organisation whose finances or reputation may be affected by publication of this work; (2) there has been and is no existing or planned relationship with an organisation whose finances or reputation may be affected by the publication of the work; and (3) there is no direct financial interest for any of the authors or their spouses, parents or children, including personal shareholdings, consultancies, patents or patent applications, whose value could be affected by the publication.