1. Department of Paediatrics University Children's Hospital Regensburg Germany
2. Department for Infectious Diseases and Vaccinology University of Basel Children's Hospital (UKBB) Basel Switzerland
3. Department of Paediatrics The University of Melbourne Parkville Victoria Australia
4. Department of Paediatrics and Paediatric Infectious Diseases Children's Hospital, Lucerne Cantonal Hospital Lucerne Switzerland
5. Department of Community Health, Faculty of Science and Medicine University of Fribourg Fribourg Switzerland
6. Department of Paediatrics Fribourg Hospital Fribourg Switzerland
7. Infectious Diseases Research Group Murdoch Children's Research Institute Parkville Victoria Australia