Funding for this research was provided by:
FP7 Ideas: European Research Council (115372)
National Institute for Health Research (CS-2013-13-012)
Received: 27 August 2019
Accepted: 23 March 2020
First Online: 6 April 2020
Ethics approval and consent to participate
: This study obtained ethical approval from each one of the databases utilised.
: All authors have reviewed and approved the manuscript.
: SL is currently an employee of Janssen-Cilag’.