Funding for this research was provided by:
National Institute for Health Research (BRC-1215-20005)
Wellcome Trust (102176/Z, 102616/Z, 098461/Z)
Text and Data Mining valid from 2019-02-12
Received: 11 July 2018
Accepted: 2 January 2019
First Online: 12 February 2019
Ethics approval and consent to participate
: Study approved by NHS Oxford Research Ethics Committee C (17/SC/0029, IRAS 213212). Latest amendment approved 23 May 2018 (protocol version 1.5). (Additional file InternalRef removed).
: 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.