1. Department of Medicine Solna, Karolinska Institutet, Lung-Allergy Clinic, Karolinska University Hospital Solna, Stockholm, Sweden
2. Department of Medical Sciences: Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden
3. InterMune Nordics AB, Stockholm, Sweden
4. Roche AB, Stockholm, Sweden
5. PCG Clinical Services, Uppsala, Sweden
6. Division of Pulmonary Medicine, Department of Medical and Health Sciences, Faculty of Health Sciences, Linkö ping University, Linkö ping, Sweden