1. Division of Pediatric Hematology/Oncology; McMaster Children's Hospital; Hamilton ON Canada
2. Department of Health Research Methods; Evidence and Impact; McMaster University; Hamilton ON Canada
3. Department of Pediatrics; McMaster University; Hamilton ON Canada
4. Division of Hematology/Oncology; Department of Pediatrics; CHU Ste-Justine; University of Montréal; Montréal Canada
5. Biostatistics Unit; St Joseph's HealthCare; Hamilton ON Canada