1. Department of Pediatric Pneumology and Allergy University Children's Hospital Regensburg (KUNO) at the Hospital St. Hedwig of the Order of St. John, University of Regensburg Regensburg Germany
2. Alpenklinik Santa Maria Bad Hindelang Germany
3. Division of Pneumology, Department of Internal Medicine, Intensive Care and Sleep Medicine Philipps‐University Marburg Marburg Germany
4. Department of Pediatric Cardiology and Intensive Care Medicine University Hospital Goettingen Goettingen Germany
5. Department of Pediatrics and Adolescent Medicine, Wilhelminenspital Teaching Hospital of the University of Vienna Vienna Austria