1. Section of Eating Disorders Department of Psychological Medicine Institute of Psychiatry, Psychology, and Neuroscience King's College London London UK
2. Department of Health Service and Population Research Institute of Psychiatry, Psychology & Neuroscience King's College London London UK
3. South London and Maudsley NHS Foundation Trust Maudsley Hospital London UK
4. Department of Biostatistics and Health Informatics Institute of Psychiatry, Psychology & Neuroscience King's College London London UK
5. Division of Medicine University College London London UK
6. Institute of Mental Health University of Nottingham Jubilee Campus Nottingham UK