Funding for this research was provided by:
Health Technology Assessment Programme (16/54/11)
University of Exeter Medical School
Text and Data Mining valid from 2018-08-14
Received: 20 September 2017
Accepted: 6 August 2018
First Online: 14 August 2018
Ethics approval and consent to participate
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.