1. Department of Clinical Research, Resonance, Memphis, Tennessee, USA
2. Department of Pediatric Oncology and Hematology, Hospital Dr. Luis Calvo Mackenna, Santiago de Chile, Chile
3. Department of Pediatric Oncology, Clínica Imbanaco, Grupo Quirón Salud, Cali, Colombia
4. Department of Pediatric Oncology, Instituto Nacional de Enfermedades Neoplásicas, Lima, Peru
5. Department of Pediatric Oncology, IMAT Oncomedica AUNA, Monteria, Colombia
6. Department of Pediatric Oncology, Hospital Militar Central, Bogota, Colombia
7. Department of Pediatric Oncology and Hematology, Aarhus University Hospital, Aarhus, Denmark