1. School of Psychology and Vison Sciences, University of Leicester, Leicester LE1 7RH, UK
2. Department of Paediatric Infectious Diseases and Immunology, Southampton Children’s Hospital, Southampton SO16 6YD, UK
3. Paediatric Emergency Medicine Leicester Academic (PEMLA) Group, Children’s Emergency Department, Leicester Royal Infirmary, Leicester LE1 5WW, UK
4. SAPPHIRE Group, Department of Population Health Sciences, University of Leicester, Leicester LE1 7RH, UK