1. Department of General Paediatrics Medical University of Graz Graz Austria
2. Department of General Paediatrics Erasmus MC‐Sophia Children's Hospital Rotterdam the Netherlands
3. Division of Paediatric Infectious Diseases, Dr. von Hauner Children's Hospital University Hospital, Ludwig‐Maximilians‐University Munich Munich Germany
4. German Centre for Infection Research, DZIF Munich Germany
5. Institute of Infection, Veterinary and Ecological Sciences Liverpool University of Liverpool Liverpool UK
6. Alder Hey Children's NHS Foundation Trust Liverpool UK
7. Great North Children's Hospital, Paediatric Immunology, Infectious Diseases & Allergy Newcastle upon Tyne Hospitals NHS Foundation Trust Newcastle upon Tyne UK
8. Translational and Clinical Research Institute Newcastle University Newcastle upon Tyne UK
9. NIHR Newcastle Biomedical Research Centre based at Newcastle upon Tyne Hospitals NHS Trust and Newcastle University Newcastle upon Tyne UK
10. Section of Paediatric Infectious Diseases, Laboratory of Medical Immunology, Radboud Center for Infectious Diseases Radboud Institute for Molecular Life Sciences, RadboudUMC Nijmegen The Netherlands
11. Paediatric Infectious Diseases and Immunology, Wilhelmina Children's Hospital University Medical Centre Utrecht Utrecht The Netherlands
12. Section of Paediatric Infectious Diseases Imperial College London UK
13. Paediatric Emergency Medicine Imperial College Healthcare Trust NHS London UK
14. Genetics, Vaccines, Infections and Paediatrics Research group (GENVIP) Hospital Clínico Universitario de Santiago de Compostela Santiago de Compostela Spain
15. University Medical Centre Ljubljana, Department of Infectious Diseases and Faculty of Medicine University of Ljubljana Ljubljana Slovenia
16. Second Department of Paediatrics, P. and A. Kyriakou Children's Hospital National and Kapodistrian University of Athens Athens Greece
17. Department of Paediatric Infectious Diseases and Immunology Erasmus MC‐Sophia Children's Hospital Rotterdam the Netherlands
18. Department of Paediatrics Children Clinical University Hospital, Rīga Stradiņa Universitāte Riga Latvia