1 NICM Health Research Institute, Western Sydney University, Westmead, NSW 2145, Australia; Division of Psychology and Mental Health, School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK; Centre for Youth Mental Health, University of Melbourne, Melbourne, VIC, Australia. Electronic address: joseph.firth@manchester.ac.uk.
2 School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia.
3 Northern Adelaide Local Health Network, Adelaide, SA, Australia; Discipline of Psychiatry, University of Adelaide, Adelaide, SA, Australia; Ramsey Health Services Mental Health, SA, Australia.
4 Health Sciences, University of York, Hull York Medical School, Bradford, UK; Bradford District Care NHS Foundation Trust, Bradford, UK.
5 South London and Maudsley NHS Foundation Trust, London, UK; Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
6 Centre for Youth Mental Health, University of Melbourne, Melbourne, VIC, Australia; Orygen, The National Centre of Excellence in Youth Mental Health, University of Melbourne, Melbourne, VIC, Australia.
7 Research and Development Unit, Parc Sanitari Sant Joan de Déu, Universitat de Barcelona, Fundació Sant Joan de Déu, Centro de Investigación Biomédica en Red de Salud Mental, CIBERSAM, Barcelona, Spain; Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain.
8 Metro South Addiction and Mental Health Service, Brisbane, QLD, Australia; School of Medicine, University of Queensland, Brisbane, Australia.