Funding for this research was provided by:
Medical Research Council (MR/L002043/1)
Academy of Medical Sciences (SGL020\1087)
National Institute for Health Research (RP-PG-0407-10314)
Wellcome Trust (086091/Z/08/Z)
Text and Data Mining valid from 2019-12-01
Received: 27 September 2019
Accepted: 29 November 2019
First Online: 9 December 2019
Ethics approval and consent to participate
: The study was approved by the MHRA (UK) Independent Scientific Advisory Committee (15_161R), under Section 251 (NHS Social Care Act 2006).
: Not applicable.
: The authors declare that they have no competing interests.