1. Childhood Cancer Program Cameroon Baptist Convention Health Services Bamenda Cameroon
2. Department of Pediatrics and Child Health, Faculty of Medicine and Health Sciences Stellenbosch University and Tygerberg Hospital Cape Town South Africa
3. Faculty of Medicine, School of Public Health Imperial College London UK
4. Division of Pediatric Hematology/Oncology/Stem Cell Transplant Columbia University Irving Medical Center New York New York
5. Division of Pediatric Hematology/Oncology McMaster Children's Hospital Hamilton Ontario Canada
6. Faculty of Health Sciences, Departments of Pediatric and Health Research Methods, Evidence and Impact McMaster University Hamilton Ontario Canada