1. Department of Paediatrics and Adolescent Medicine Copenhagen University Hospital—Amager and Hvidovre Hvidovre Denmark
2. Emergency Medical Services Ballerup Denmark
3. Department of Clinical Medicine University of Copenhagen Copenhagen Denmark
4. Department of Cardiology Copenhagen University Hospital—Herlev and Gentofte Gentofte, Copenhagen Denmark
5. Region Headquarter Copenhagen Denmark
6. Department of Paediatrics and Adolescent Medicine Copenhagen University Hospital—Herlev and Gentofte Herlev, Copenhagen Denmark
7. Department of Paediatrics and Adolescent Medicine Copenhagen University Hospital—Rigshospitalet Copenhagen Denmark
8. National Institute of Public Health University of Southern Denmark Odense Denmark
9. Department of Paediatrics and Adolescent Medicine Copenhagen University Hospital—Næstved, Slagelse and Ringsted Slagelse Denmark
10. Department of Paediatrics and Adolescent Medicine Copenhagen University Hospital—North Zealand Hilleroed Denmark