1. Division of Emergency Medicine, Children’s National Hospital, Washington, DC
2. Sunshine Hospital, Melbourne, Victoria, Australia
3. St George’s University Hospitals, National Health Service Foundation Trust, London, United Kingdom
4. SAPPHIRE Group, Population Health Sciences, Leicester University, Leicester, United Kingdom
5. Paediatric Emergency Medicine Leicester Academic (PEMLA) Group, Children's Emergency Department, Leicester Royal Infirmary, Leicester, United Kingdom