1. Department of Intensive Care and Neonatology, and Children`s Research Center, University Children`s Hospital Zurich, Zurich, Switzerland.
2. Child Health Research Centre, University of Queensland, Brisbane, QLD, Australia.
3. Division of Infectious Diseases, and Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland.
4. Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
5. Clinic of Neonatology, Department Mother-Woman-Child, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
6. Pediatric Infectious Diseases Unit, Department of Woman, Child and Adolescent, Children’s Hospital of Geneva, University Hospitals of Geneva and Faculty of Medicine, Geneva, Switzerland.
7. Children’s Hospital Lucerne, Lucerne, Switzerland.
8. Infectious Diseases and Vaccinology, University Children’s Hospital Basel, Basel, Switzerland.
9. Children’s Hospital Aarau, Aarau, Switzerland.
10. Children’s Hospital of Eastern Switzerland, St. Gallen, Switzerland.
11. Department of Neonatology, University Hospital Zurich, Zurich, Switzerland.
12. Department of Pediatrics, Cantonal Hospital Graubuenden, Chur, Switzerland.