1. Translational and Clinical Research Institute, Newcastle University Newcastle upon Tyne UK
2. The Centre for Applied GenomicsThe Hospital for Sick Children Toronto Ontario Canada
3. Department of Psychiatry and Behavioural NeurosciencesMcMaster University Hamilton Ontario Canada
4. Division of Epidemiology and Biostatistics, Dalla Lana School of Public HealthUniversity of Toronto Toronto Ontario Canada
5. Department of Paediatric Laboratory Medicine, Molecular Genetics LaboratoryThe Hospital for Sick Children Toronto Ontario Canada
6. Carolina Institute for Developmental DisabilitiesUniversity of North Carolina at Chapel Hill, School of Medicine Chapel Hill North Carolina USA
7. Provincial Medical Genetics ProgramHealth Sciences Center St. John's Newfoundland Canada
8. Holland Bloorview Hospital Toronto Ontario Canada
9. McLaughlin Centre and Department of Molecular GeneticsUniversity of Toronto Toronto Ontario Canada
10. Battelle Center for Mathematical MedicineThe Research Institute at Nationwide Children's Hospital Columbus Ohio USA
11. Centre for Addiction and Mental HealthThe Hospital for Sick Children & University of Toronto Toronto Ontario Canada