1. Department of Psychiatry; University Hospital of Bellvitge-IDIBELL; Barcelona; Spain
2. Hospital Louis Mourier (Paris VII); Service of Psychiatry; Colombes; France
3. Laboratori d'Estadística Aplicada, Departament de Psicobiologia i Metodologia; Universitat Autònoma de Barcelona; Spain
4. Medical University of Vienna; Department of Child and Adolescent Psychiatry; Vienna; Austria
5. Eating Disorders Unit and SGDP Research Centre; Institute of Psychiatry; London; UK