1 Section Health Equity Studies & Migration, Department of Primary Care and Health Services Research, Heidelberg University Hospital, Heidelberg, Germany.
2 Division of Medicine, Department of Paediatric Emergency Medicine, St. Mary's Hospital - Imperial College NHS Healthcare Trust, London, UK.
3 Section of Paediatric Infectious Diseases, Department of Infectious Diseases, Faculty of Medicine, Imperial College London, London, UK.
4 Centre for Paediatrics and Child Health, Imperial College London, London, UK.
5 Division of Paediatric Emergency Medicine, Department of Paediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
6 The European Academy of Paediatrics (EAP), Brussels, Belgium.