1. Department of Pediatrics; IWK Health Centre/Dalhousie University; Halifax Nova Scotia Canada
2. Department of Pathology; IWK Health Centre/Dalhousie University; Halifax Nova Scotia Canada
3. Department of Pathology; Dalhousie University; Halifax Nova Scotia Canada
4. Division of Hematology/Oncology; Department of Pediatrics; IWK Health Centre; Halifax Nova Scotia Canada
5. Division of Hematopathology; Mayo Clinic College of Medicine; Rochester Minnesota