1. The Research Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted Hospitals, Slagelse, Denmark
2. Institute of The Regional Health University of Southern Denmark, Odense, Denmark
3. Department of Health Research, Vejle Sygehus, Vejle, Denmark
4. Department of Respiratory Medicine, Naestved Hospital, Naestved, Denmark
5. Department of Internal Medicine, Zealand University Hospital Roskilde, Roskilde, Denmark