| Affiliation: | 1. Paediatric Infectious Diseases, Infection Control and Epidemiology Unit, Université Libre de Bruxelles, Brussels, Belgium;2. Pediatric Infectious Diseases Unit, Ben Gurion University of the Negev and Soroka University Medical Center, Beer-Sheva, Israel;3. Pediatric Infectious Diseases, Division of Pediatrics, Instituto de Atención Pediátrica, University of Medical Sciences, San Jose, Costa Rica;4. Paediatric Infectious Diseases and Vaccines, University Children''s Hospital, Basel, Switzerland;5. Paediatric Infectious Diseases Unit, Creteil Hospital, France;6. Department of Otorhinolaryngology, Ghent University Hospital, Ghent, Belgium;7. Division of General Academic Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA;8. Department of Vaccines and Infectious Disease Epidemiology, Children''s Hospital Würzburg, Germany;9. Paediatric Department, University of Milan and Fondazione IRCCS Ospedale Maggiore, Policlinico Mangiagalli e Regina Elena, Milan, Italy;10. Clinical Research Unit, National Institute for Health and Welfare, Helsinki, Finland;11. Division of Research, Kaiser Permanente, Oakland, CA, USA;12. Department of Paediatric Immunology, University Medical Centre, Utrecht, Netherlands;13. Department of Pediatrics, Pediatric Infectious Diseases, University of Colorado, Denver, CO, USA;14. Department of Pediatrics and Adolescence, University of Oulu, Oulu, Finland;15. Department of Laboratory Medicine, University Hospital Gasthuisberg, Leuven, Belgium;p. Pediatric Infectious Diseases Department, Boston University, Boston, MA, USA |
