1. Department of Paediatrics and Adolescent Medicine Copenhagen University Hospital Rigshospitalet Copenhagen Denmark
2. Department of Paediatrics Odense University Hospital Odense Denmark
3. Department of Paediatrics Aarhus University Hospital Aarhus Denmark
4. Department of Cardiology Section for Lung Transplantation and Respiratory Medicine Copenhagen University Hospital Rigshospitalet Copenhagen Denmark
5. Department of Clinical Medicine University of Copenhagen Copenhagen Denmark