1. Eating Disorders Residential Program, Ontario Shores Centre for Mental Health Sciences, Whitby; Whitby Ontario Canada
2. Department of Psychiatry; University of Toronto; Toronto Ontario Canada
3. Eating Disorders Unit,The Hospital for Sick Children; Toronto Ontario Canada
4. Great Ormond Street Institute of Child Health, University College London; London United Kingdom
5. Department of Biomedical Statistics and Methodology; Neuropsychiatric Research Institute; Fargo North Dakota United States of America
6. Department of Psychiatry and Behavioral Science; University of North Dakota School of Medicine; North Dakota United States of America
7. Discipline of Paediatrics and Child Health; University of Sydney; Sydney Australia
8. Eating Disorder Service, Children's Hospital at Westmead; Sydney Australia
9. Discipline of Psychiatry, University of Sydney; Sydney Australia