1. Institute of Social and Preventive Medicine University of Bern Bern Switzerland
2. Graduate School for Health Sciences University of Bern Bern Switzerland
3. Division of Paediatric Respiratory Medicine and Allergology, Department of Paediatrics, Inselspital University Hospital, University of Bern Bern Switzerland
4. PCD Support UK Buckingham UK
5. PCD Foundation Minneapolis Minnesota USA
6. Sorbonne University INSERM UMR 933 Paris France
7. Univ Paris Est‐Créteil, Faculté de Santé, INSERM, IMRB Créteil France
8. Pulmonary Department Centre Hospitalier Intercommunal de Créteil France