Funding for this research was provided by:
University of Oxford
Received: 29 May 2019
Accepted: 27 December 2019
First Online: 15 January 2020
Compliance with ethical standards
: BRG has received travel expenses from Janssen UK. CJH has received consultancy fees from Lundbeck, P1vital, Pfizer, Sage Pharmaceuticals and Servier.