1. Division of Pediatrics Infectious Diseases Children's Hospital of Philadelphia Philadelphia Pennsylvania USA
2. Division of Pediatric Allergy, Immunology and Bone Marrow Transplant University of California San Francisco San Francisco California USA
3. Division of Infectious Diseases University of Texas‐Houston McGovern Medical School Houston Texas USA
4. Division of Pediatric Hematology and Oncology Vanderbilt University Medical Center Nashville Tennessee USA
5. Division of Blood and Marrow Transplant and Cellular Immunotherapy Moffitt Cancer Center Tampa Florida USA
6. Division of Haematology Oncology The Hospital for Sick Children Toronto Ontario USA
7. Department of Pediatrics University of Arkansas for Medical Sciences Little Rock Arkansas USA
8. Biostatistics and Data Management Johnson and Johnson Medical Devices Companies Irvine California USA
9. Children's Oncology Group University of Southern California Monrovia California USA
10. Division of Biostatistics City of Hope Duarte California USA
11. Department of Hematology/Oncology Nationwide Children's Hospital Columbus Ohio USA
12. Department of Pediatrics National Public Health Organization Athens Greece