1Department of Psychosis Studies, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK.
2Institute of Health and Wellbeing, University of Glasgow, UK.
3Centre for Youth Mental Health, University of Melbourne, Australia.
4Orygen, Parkville, Australia.
5Unmind, London, UK.
6School of Psychology, University of Southampton, UK.
7Calmsie, Warsaw, Poland.
8Department of Psychology, University of Regina, Canada.
9NIHR MindTech-MedTech Co-operative, NIHR Nottingham Biomedical Research Centre, School of Medicine, Institute of Mental Health, University of Nottingham, UK.
10Big Health Ltd, London, UK.
11SilverCloud by Amwell, Boston, USA.
12ORCHA, Daresbury, UK.
13Mental Health and Wellbeing Unit, Warwick Medical School, University of Warwick, UK.
14Kent and Medway Medical School, Canterbury, UK.
15Department of Biostatistics and Health Informatics, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK.
16Department of Experimental Psychology, University of Oxford, UK.
17Oxford Health NHS Foundation Trust, Oxford, UK.
18School of Psychology, Trinity College Dublin, Ireland.
19Department of Clinical Psychology, VU University and Amsterdam Public Health Research, Amsterdam, Netherlands.
20University of Oxford Medical Sciences Division, University of Oxford, UK.
21Social Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK.