1. Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
2. Regional State Administrative Agency for Southern Finland, Hämeenlinna, Finland
3. Faculty of Medicine and Health Technology, Tampere University Respiratory Research Group, Tampere, Finland
4. Department of Respiratory Medicine, Seinäjoki Central Hospital, Seinäjoki, Finland
5. Department of Internal Medicine, Krefting Research Center, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
6. Department of Public Health, University of Turku and Turku University Hospital, Turku, Finland
7. Department of Public Health, University of Helsinki, Helsinki, Finland