Affiliation: | 1. Department of Pediatrics and Cancer Center, Georgia Regents University, Augusta, GA, USA;2. Department of Medicine, Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada;3. Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, ON, Canada;4. The University of Texas Southwestern Medical Center and Children's Medical Center, Dallas, TX, USA;5. Canadian Blood Services, Hamilton, ON, Canada |