1. Department of Respiratory Medicine and Endocrinology, Pulmonary Section, Copenhagen University Hospital - Hvidovre, Hvidovre, Denmark
2. Department of Clinical Research, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
3. Research Unit Nursing and Health Care, Aarhus University, Aarhus, Denmark
4. Allergy and Lung Clinic, Elsinore, Denmark
5. Department of Respiratory Medicine, Copenhagen University Hospital – Hvidovre, Hvidovre, Denmark
6. Institute of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
7. Centre for Nursing, University College Absalon, Roskilde, Denmark