1. Sanofi Pasteur, Marcy l'Etoile, France
2. Clinic of Infectious Diseases Health Care Team, Dębica, Poland
3. CRS Clinical Research Services Kiel GmbH, Lübeck, Germany
4. Eurofins-Optimed, Gières, France
5. Center for Vaccinology, Ghent University and University Hospital, Gent, Belgium
6. Centre CAP, Centre Médical Odysseum, Montpellier, France
7. Biotrial, Rennes Cedex, France
8. St Hedwig of Silesia Hospital, Department of Paediatrics, Prusicka, Trzebnica, Poland
9. Medic Trials, Berlin, Germany
10. Leuven University Vaccinology Center, Leuven, Belgium
11. “Medyk”, Wola, Poland
12. Centre for the Evaluation of Vaccination, Vaccine & Infectious Disease Institute, Antwerpen (Wilrijk), Belgium