1. Department of Medical Epidemiology and Biostatistics Karolinska Institutet Stockholm Sweden
2. Department of Health Sciences University Magna Graecia of Catanzaro Catanzaro Italy
3. Outpatient Unit for Clinical Research and Treatment of Eating Disorders Mater Domini University Hospital Catanzaro Italy
4. Department of Psychiatry University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
5. Department of Nutrition University of North Carolina at Chapel Hill Chapel Hill North Carolina USA