Funding for this research was provided by:
Medical Research Council (MC_PC_U127574433, MC_UU_00007/7)
Medical Research Foundation (MC_UU_00007/17)
Text and Data Mining valid from 2020-03-04
Received: 27 November 2019
Accepted: 14 February 2020
First Online: 4 March 2020
Ethics approval and consent to participate
: Not applicable.
: The authors declare that they have no competing interests.