1. Social, Genetic and Developmental Psychiatry Centre Institute of Psychiatry, Psychology and Neuroscience, King's College London London UK
2. Research Department of Clinical, Educational and Health Psychology University College London London UK
3. National and Specialist OCD, BDD and Related Disorders Clinic for Young People South London and Maudsley NHS Foundation Trust London UK
4. Centre for Brain and Cognitive Development, Department of Psychological Sciences Birkbeck, University of London London UK
5. Department of Child & Adolescent Psychiatry Institute of Psychiatry, Psychology & Neuroscience, King's College London London UK
6. National and Specialist CAMHS Trauma, Anxiety, and Depression Clinic, South London and Maudsley NHS Foundation Trust London UK
7. NIHR Biomedical Research Centre, South London and Maudsley Hospital London UK