1AstraZeneca AG, Baar, Switzerland,
2University Hospital Basel, Pulmonology Clinic, Basel, Switzerland,
3University of Freiburg, Clinic of Respiratory Medicine and Faculty of Medicine, Freiburg, Germany,
4University Hospital Geneva (HUG), Pulmonology Division, Geneva, Switzerland,
5Centre Hospitalier du Valais Romand, Service de Pneumologie, Sion, Switzerland,
6University Hospital Geneva (HUG), Immunology and Allergology Division, Geneva, Switzerland,
7Pulmonary Specialty Center Fiechter, Aathal, Switzerland,
8Cantonal Hospital Baselland, University Centre of Internal Medicine, Liestal, Switzerland,
9Immunology Centre Zurich, Zurich, Switzerland,
10Inselspital, University Hospital Bern, Department of Pulmonary Medicine, Bern, Switzerland,
11Pulmonary Clinic Bethanien, Zurich, Switzerland,
12Hospital Wetzikon (GZO), Pulmonology Clinic, Wetzikon, Switzerland,
13Cantonal Hospital Luzern, Pulmonology Clinic, Luzern, Switzerland,
14Pulmonary Center Hirslanden, Zurich, Switzerland,
15Cantonal Hospital Graubünden, Pulmonology Clinic, Chur, Switzerland