1. Section of Eating Disorders; Department of Psychological Medicine, King's College London, Institute of Psychiatry; London United Kingdom
2. Department of Psychological; Pedagogical and Educational Sciences, University of Palermo; Palermo Italy
3. Behavioural and Brain Sciences Unit; Institute of Child Health, University College London; London United Kingdom
4. University of Liverpool; Adolescent Psychiatry; England United Kingdom
5. London School of Economics; London United Kingdom
6. South London and Maudsley NHS Foundation Trust; London United Kingdom