1. Department of Immunology Institute of Biomedicine and Translational Medicine University of Tartu Tartu Estonia
2. Children's Clinic of Tartu University Hospital Tartu Estonia
3. Department of Pediatrics University of Tartu Tartu Estonia
4. Faculty of Medicine and Life Science University of Tampere Tampere Finland
5. Fimlab Laboratories Pirkanmaa Hospital District Tampere Finland
6. Vaccine Research Center Faculty of Medicine and Life Sciences University of Tampere Tampere Finland
7. Jorvi Hospital Helsinki University Hospital Espoo Finland
8. Children's Hospital University of Helsinki and Helsinki University Hospital Helsinki Finland
9. Research Programs Unit Diabetes and Obesity University of Helsinki Helsinki Finland
10. Department of Public Health Solutions National Institute for Health and Welfare Helsinki Finland
11. Faculty of Social Sciences/Health Sciences University of Tampere Tampere Finland
12. Center for Child Health Research Tampere University and University Hospital The Science Center of Pirkanmaa Hospital District Tampere Finland
13. Immunogenetics Laboratory Institute of Biomedicine University of Turku and Clinical Microbiology Turku University Hospital Turku Finland
14. Folkhälsan Research Center Helsinki Finland