Affiliation: | 1. Department of Oncology, Benjamin Bloom Hospital, San Salvador, El Salvador;2. Department of Global Pediatric Medicine, St. Jude Children's Research Hospital, Memphis, Tennessee;3. Division of Hematology/Oncology, Hospital for Sick Children, Toronto, Ontario, Canada;4. Child Health Evaluative Sciences, Hospital for Sick Children, Toronto, Ontario, Canada;5. Global Health Economics, School of Public Health and Health Systems, University of Waterloo, Waterloo, Ontario, Canada |