1. Department of Paediatrics, Institute of Clinical Science at The Sahlgrenska Academy, Sahlgrenska University Hospital, Gothenburg, Sweden
2. Stockholm Cystic Fibrosis Centre, Karolinska University Hospital, Karolinska Institutet, Huddinge, Sweden
3. Gothenburg CF center, Vita Stråket 12, Sahlgrenska University Hospital, Gothenburg, Sweden
4. Uppsala Centre for Cystic Fibrosis, Uppsala University Hospital, Uppsala, Sweden
5. Vertex Pharmaceuticals Incorporated, Boston, MA, USA
6. Quantify Research, Stockholm, Sweden