1. Department of Public Health and Clinical Medicine, Division of Medicine, Umeå University, Umeå, Sweden
2. Division of Respiratory Medicine, Sunderby Hospital, 971 80 Luleå, Sweden
3. Department of Public Health and Clinical Medicine, The OLIN unit, Section of Sustainable Health, Umeå University, Umeå, Sweden
4. Department of Health Science, Division of Nursing, Luleå University of Technology, Luleå, Sweden
5. Department of Public Health and Clinical Medicine, Division of Medicine, Umeå University. Umeå, Sweden
6. Krefting Research center, Institution of Medicine, University of Gothenburg, Gothenburg, Sweden