Funding for this research was provided by:
Health Research Board (SPHeRE/2013/1)
Text and Data Mining valid from 2018-06-23
Received: 29 December 2017
Accepted: 5 June 2018
First Online: 23 June 2018
Ethics approval and consent to participate
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.