1. Department of Medical Humanities, University Medical Center Utrecht, Utrecht University, PO Box 85500, 3508 GA Utrecht, The Netherlands
2. Dutch Cystic Fibrosis Foundation (NCFS), Dr. A. Schweitzerweg 3A, 3744 MG Baarn, The Netherlands
3. Department of Pediatric Pulmonology, Wilhelmina Children's Hospital, Regenerative Medicine Center, University Medical Center, Internal post KH.01.419.0, P.O. Box 85090, 3508 AB Utrecht, The Netherlands