1. University of Groningen, Department of Pulmonology, University Medical Center Groningen, Groningen, The Netherlands.
2. Radboud University Medical Center, Nijmegen, The Netherlands.
3. Department of Medicine, National Jewish Health, and University of Colorado Denver, Denver, CO, USA.
4. Emma's Children Hospital AMC, Amsterdam, The Netherlands.
5. University Paris Descartes (EA2511), Cochin Hospital Group (AP-HP), Paris, France.
6. Cincinnati Children's Hospital and Medical Center, Cincinnati, OH, USA.
7. Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
8. Takeda Pharmaceuticals International GmbH, Zurich, Switzerland.
9. Takeda Development Centre Europe Ltd, London, UK.
10. PHARMO Institute for Drug Outcomes Research, The Netherlands.
11. Research in Real Life, Cambridge, UK.
12. Academic Primary Care, University of Aberdeen, Aberdeen, UK.