1. British Global & Travel Health Association, Bath, UK
2. Open Rome, Paris, France
3. Labo UR4129 / P2S, Université Lyon 1, Lyon, France
4. Department for Infectious Diseases, University of Zagreb School of Medicine, Zagreb, Croatia
5. Department for Acute Respiratory Infections (Head), Dr. Fran Mihaljevic University Hospital for Infectious Diseases, Zagreb, Croatia
6. School of Public Health, Ben Guiron University of the Negev, Beer-Sheva, Israel
7. Faculty of Medicine, Transilvania University Brasov, Brasov, Romania
8. Children’s Clinic Hospital, Brasov, Romania
9. Thorax Department, Centro Hospitalar Universitário Lisboa Norte, Lisbon, Portugal
10. Scientific Applied Center for Military Epidemiology and Hygiene, Military Medical Academy, Sofiâ, Bulgaria
11. Paediatirc Infectious Disease, Clinic of Children’sChildren’s Diseases, Institute of Clinical Medicine, Medicine, Vilnius University, Vilnius, Lithuania
12. Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
13. Medical Epidemiologist and Head of Department, Department of Epidemiology, Faculty of Public Health, Slovak Medical University Bratislava, Bratislava, Slovakia
14. Head of Department,Department of Pediatrics with Clinical Assessment Unit, Medical University of Warsaw, Warsaw, Poland
15. Medical Epidemiologist and Head of Department, Department of Infectious Diseases Epidemiology, National Institute of Public Health, Prague, Czech Republic
16. Department of Epidemiology and Biostatistics, Medicine, Charles University, Prague, Czech Republic
17. Research, Studies, and Documentation, National Public Health Organization, Athens, Greece
18. Immunology, Institute of Microbiology and Immunology, Medicine, University of Belgrade, Belgrade, Serbia
19. Department of Social Medicine and Public Health, Medical University of Warsaw, Warsaw, Poland
20. National Influenza Centre, Hospital Clínico Universitario and University of Valladolid, Valladoild, Spain
21. General Medicine, University of Perugia, Perugia, Italy
22. Medizinische Klinik IV, Klinikum der Ludwig-Maximilians-Universität München, Deutschland, Europe
23. General Practitioner, Amersfoort, The Netherlands
24. Department of Paediatrics, Riga Stradins University, Latvia, Europe
25. Family Vaccination Centre, Children’s Clinical University Hospital, Riga, Latvia