Funding for this research was provided by:
Wellcome Trust (203351/Z/16/Z)
Text and Data Mining valid from 2019-07-19
First Online: 19 July 2019
Compliance with Ethical Standards
: All participants gave informed consent and the author has no conflicts of interest.
: Ethical approval for this work was granted by the Research Ethics Office of King’s College London through its minimal risk registration process (Reference MR/16/17-1057)