1. Group Practice & Center, Allergy, Respiratory and Sleep Medicine, Maingau Hospital of the Red Cross, Frankfurt am Main, Germany
2. Life and Health Sciences Research Institute, School of Medicine, University of Minho School of Medicine, Braga, Portugal
3. Pediatric Infectious Diseases and Vaccinology, University of Basel Children’s Hospital, Basel Switzerland
4. Department of Pediatrics, University of Athens, Athens, Greece
5. Kirby Institute, UNSW Medicine, University of New South Wales, Sydney, Australia
6. Department of Pediatrics, University of Pittsburgh Medical Center, Pittsburgh, USA
7. Department of Infectious Diseases, University of Melbourne, Melbourne, Australia
8. Department of Translational Medicine, University of Ferrara, Ferrara, Italy
9. Pulmonary/Critical Care Division, Autonomous University of Nuevo León, San Nicolás de los Garza, Mexico
10. American Lung Association, Chicago, USA
11. Immunisation Coalition, Melbourne, Australia
12. Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology, San Diego, USA
13. AMDA – The Society for Post-Acute and Long-Term Care Medicine, Denver, USA
14. Feinberg School of Medicine, Northwestern University, Chicago, USA
15. Department of Pediatrics, University of Paris, Paris, France
16. Institute for Biomedical Aging Research, Universität Innsbruck, Innsbruck, Austria
17. Faculty of Medicine, University of Southampton, Southampton, UK
18. Clinical Microbiology Consultant, Cologne, Germany