Funding for this research was provided by:
Text and Data Mining valid from 2019-12-01
Received: 11 June 2019
Accepted: 17 October 2019
First Online: 2 December 2019
Ethics approval and consent to participate
: The research protocol was approved by the Institutional Medical Ethical Committee (METc 2015/313). All subjects provided written informed consent.
: Not applicable, no individual details have been provided.
: The authors declare that they have no competing interests.