Received: 26 July 2019
Accepted: 24 October 2019
First Online: 10 January 2020
Ethics approval and consent to participate
: Not applicable.
: The authors provide consent for publication.
: JG reports grants from UK Medical Research Council, grants from Wellcome, grants from National Institute for Health Research, outside the submitted work; and led the conception of True Colours, a digital phenotyping and outcome assessment tool and has overseen its implementation in routine clinical practice and research studies. He is also a National Institute for Health Research Senior Investigator and Director of the NIHR Oxford Health Biomedical Research Centre. LVK has been a consultant for Lundbeck within the last 3 years. The other authors report no competing interests.