1. Division of Hematology/Oncology; McMaster Children's Hospital; Hamilton Health Sciences; Hamilton ON Canada
2. Department of Biostatistics and Computational Biology; Dana-Farber Cancer Institute; Boston MA USA
3. Department of Pediatrics; University of Rochester Medical Center and School of Medicine; Rochester NY USA
4. Department of Pediatrics; San Jorge Children's Hospital; San Juan; Puerto Rico
5. Pediatrics; Montefiore Medical Center; Albert Einstein College of Medicine; Bronx NY USA
6. Department of Pediatric Oncology; Roswell Park Comprehensive Cancer Center; Division of Pediatric Hematology/Oncology; Jacob's School of Medicine and Biomedical Sciences, University of Buffalo; NY USA
7. Hematology-Oncology Division; Charles Bruneau Cancer Center; Sainte-Justine University Hospital; University of Montreal; Montreal QC Canada
8. Pediatrics; Centre Hospitalier Universitaire de Quebec; Sainte-Foy; QC Canada
9. Pediatrics; Inova Fairfax Hospital for Children; Falls Church VA USA
10. Division of Pediatric Hematology/Oncology/Stem Cell Transplantation; Columbia University Medical Center; New York USA
11. Pediatric Hematology Oncology; Hasbro Children's Hospital/Brown University; Providence RI USA
12. Department of Pathology; Boston Children's Hospital; Boston MA USA
13. Department of Pediatric Oncology; Dana-Farber Cancer Institute and Division of Pediatric Hematology-Oncology; Boston Children's Hospital; Boston MA USA