1. Regional Rehabilitation Knowledge Center in South East Norway, 1453 Nesodden, Norway
2. Department of Physiotherapy, Sorlandet Hospital, 4838 Arendal, Norway
3. Department of Thoracic Medicine, Haukeland University Hospital, 5021 Bergen, Norway
4. Department of Rehabilitation Science and Health Technology, Oslo Metropolitan University, 0130 Oslo, Norway
5. Faculty of Health and Social Sciences, Bergen University College, 5063 Bergen, Norway