1. Department of Internal Medicine and Clinical Nutrition, Krefting Research Centre, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
2. Department of Care Science, Faculty of Health and Society, Malmö University, Malmö, Sweden
3. Department of Respiratory Medicine, Seinäjoki Central Hospital, Seinäjoki, Finland
4. Tampere University Respiratory Research Group, Faculty of Medicine and Health Technology, University of Tampere, Tampere, Finland