1. Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark.
2. Danish Center for Healthcare Improvements, Faculties of Social Sciences and Medicine, Aalborg University, Aalborg, Denmark.
3. Department of Pulmonary Diseases, Aalborg Hospital, Århus University Hospitals, Århus, Denmark.
4. Vejgaard Healthcare Centre and Healthcare Centre Aalborg, Aalborg, Denmark.