1. Department of Paediatrics NU Hospital Group Uddevalla Sweden
2. Department of Paediatrics, Institute of Clinical Sciences University of Gothenburg Gothenburg Sweden
3. Paediatric Infectious Diseases Unit, Department of Paediatrics, Astrid Lindgren Children's Hospital Karolinska University Hospital Stockholm Sweden
4. Department of Women´s and Children´s Health Karolinska Institute Stockholm Sweden
5. Department of Paediatrics Skaraborg Hospital Skövde Sweden
6. Queen Silvia Children's Hospital Gothenburg Sweden