Funding for this research was provided by:
Received: 19 April 2018
Accepted: 29 July 2019
First Online: 5 August 2019
Ethics approval and consent to participate
: Ethical approval for EMIS-2010 was given by the Research Ethics Committee of the University of Portsmouth, UK (REC application number 08/09:21). Written consent to participate was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.