1. RCSI University of Medicine and Health Sciences, Dublin, Ireland;
2. Children’s Health Ireland, Dublin, Ireland;
3. Royal Brompton Hospital, London, United Kingdom;
4. National Heart and Lung Institute, Imperial College London, London, United Kingdom;
5. Department of Radiology and
6. Department of Pediatric Pulmonology, Erasmus Medical Centre, Rotterdam, the Netherlands; and
7. Thirona, Nijmegen, the Netherlands