1. Department of Care Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
2. Department of Public Health and Clinical Medicine, Division of Medicine, The OLIN Unit, Umeå University, Umeå, Sweden
3. HUCH Heart and Lung Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
4. Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine, The OLIN Unit, Umeå University, Umeå, Sweden