1. UCSF Benioff Children's Hospital and Departments of Pediatrics, University of California San Francisco School of Medicine San Francisco California USA
2. Dana‐Farber/Boston Children's Cancer and Blood Disorders Center and Harvard Medical School Boston Massachusetts USA
3. Epidemiology and Biostatistics, University of California San Francisco School of Medicine San Francisco California USA
4. Radiation Oncology, University of California San Francisco School of Medicine San Francisco California USA
5. Department of Surgery Boston Children's Hospital and Harvard Medical School Boston Massachusetts USA
6. Department of Biostatistics, University of Florida Children's Oncology Group Statistics and Data Center Gainesville Florida USA
7. Department of Pediatric Surgery, Hôpital d'enfants Armand‐Trousseau, Assistance Publique‐Hôpitaux de Paris Sorbonne University Paris France
8. Pediatric Oncology Unit Hospital Universitario y Politécnico La Fe Valencia Spain