1. Department of Medical Genetics, Lady Davis Institute, Jewish General Hospital, McGill University; Montreal Quebec Canada
2. Department of Pediatric Hematology-Oncology; McGill University Health Center; Montreal Quebec Canada
3. Division of Hematology/Oncology; The Hospital for Sick Children; Department of Molecular and Medical Genetics; University of Toronto; Toronto Ontario Canada
4. Department of Pediatric Laboratory Medicine; The Hospital for Sick Children; Department of Molecular and Medical Genetics; University of Toronto; Toronto Ontario Canada
5. Department of Diagnostic Imaging; The Hospital for Sick Children; Department of Molecular and Medical Genetics; University of Toronto; Toronto Ontario Canada
6. Department of Pediatrics; The Hospital for Sick Children; Department of Molecular and Medical Genetics; University of Toronto; Toronto Ontario Canada
7. Division of Pediatric Pathology; Montreal Children's Hospital; McGill University Health Centre; Montreal Quebec Canada
8. Research Institute of the McGill University Health Centre; Montreal Quebec Canada
9. Anatomical Pathology; Sidra Medical and Research Center; Doha Qatar
10. Minneapolis; Minnesota
11. Departments of Oncology and Experimental Medicine; McGill University; Montreal Quebec Canada
12. Program in Cancer Genetics; Departments of Oncology and Human Genetics; McGill University; Montreal Quebec Canada