1 School of Medicine, Academic Unit of Mental Health and Clinical Neurosciences, Institute of Mental Health, University of Nottingham, Nottingham, UK; School of Psychology, University of Nottingham, Nottingham, UK.
2 Accare Child Study Center, Groningen, Netherlands; Department of Child and Adolescent Psychiatry, University Medical Center Groningen, Groningen, Netherlands; Levvel, Specialists for Youth and Family, Amsterdam, Netherlands.
3 Centre for Neuropsychiatric Genetics and Genomics & Wolfson Centre for Young People's Mental Health, Cardiff University, Cardiff CF24 4HQ, UK.
4 Center of Neurodevelopmental Disorders, Department of Women's and Children's Health, Centre for Psychiatry Research, Karolinska Institute, Stockholm, Sweden; Curtin School of Allied Health, Curtin University, Perth, WA, Australia.
5 Center of Neurodevelopmental Disorders, Department of Women's and Children's Health, Centre for Psychiatry Research, Karolinska Institute, Stockholm, Sweden; Child and Adolescent Psychiatry, Stockholm Health Care Services, Region Stockholm, Stockholm, Sweden; Curtin Autism Research Group, Curtin School of Allied Health, Curtin University, Perth, WA Australia.
6 Department of Psychology, School of Social Sciences, Nottingham Trent University, Nottingham, UK.
7 Department of Child and Adolescent Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany; German Center for Mental Health, partner site Mannheim-Heidelberg-Ulm, Germany.
8 School of Medicine, Academic Unit of Mental Health and Clinical Neurosciences, Institute of Mental Health, University of Nottingham, Nottingham, UK; NIHR MindTech MedTech Co-operative, Institute of Mental Health, School of Medicine, University of Nottingham, Nottingham, UK; NIHR Nottingham Biomedical Research Centre, Institute of Mental Health, University of Nottingham, Nottingham, UK.
9 LUMC Curium, Child and Adolescent Psychiatry, Leiden University Medical Centre, Leiden, Netherlands.
10 PsyQ, Expertise Centre Adult ADHD, The Hague, Netherlands.
11 Department of Child and Adolescent Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
12 IDeA Research Center for Individual Development and Adaptive Education of Children at Risk, Frankfurt am Main, Germany; Institute for Psychology in Education, University of Münster, Münster, Germany.
13 Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
14 Centre for Brain and Behaviour, Department of Psychology, School of Biological and Behavioural Sciences, Queen Mary University of London, UK.
15 Science of ADHD and Neurodevelopment Collaboration, University of Exeter, Exeter, UK.
16 CHU Montpellier, Child and Adolescent Psychiatry Unit (MPEA1), University of Montpellier, Montpellier, France; INSERM CESP U1018, Villejuif, France.
17 EXPLORA, Department of Experimental Clinical and Health Psychology, Ghent University, Ghent, Belgium.
18 Centre for Neuropsychiatric Genetics and Genomics & Wolfson Centre for Young People's Mental Health, Cardiff University, Cardiff CF24 4HQ, UK. Electronic address: martinjm1@cardiff.ac.uk.