Kings College London - Department of Child and Adolescent Psychiatry, Kings College London - Department of Child and Adolescent Psychiatry, South London and Maudsley NHS Foundation Trust, Medical University of Vienna, Berkshire Healthcare NHS Foundation Trust, University of Edinburgh - Centre for Clinical Brain Sciences, Temple Street Children's University Hospital, Hertfordshire Partnership University NHS Foundation Trust - Child and Adolescent Mental Health Services, Hertfordshire Partnership University NHS Foundation Trust - Child and Adolescent Mental Health Services, Central and North West London NHS Foundation Trust, South London and Maudsley NHS Foundation Trust, South London and Maudsley NHS Foundation Trust, Università degli Studi di Cagliari Facoltà di Medicina e Chirurgia Monserrato, South London and Maudsley NHS Foundation Trust, Manchester University NHS Foundation Trust, NHS Lothian, NHS Lothian, University College Dublin (UCD) - School of Medicine and Medical Science, South London and Maudsley NHS Foundation Trust, Clinic for Neurology and Psychiatry for Children and Youth, Vadaskert Child and Adolescent Psychiatric Hospital, University of Turin - Department of Public Health and Pediatric Sciences, Universita degli studi di Torino, Abant Izzet Baysal University Medical Faculty, Dubai Department of Medical Education, NHS Lothian and King's College London - Social, Genetic and Developmental Psychiatry