1. Respiratory Medicine Unit; Center for Molecular Medicine; Department of Medicine; Solna Karolinska Institutet; Stockholm Sweden
2. Lung-Allergy Clinic Karolinska University Hospital Solna; Stockholm Sweden
3. Department of Respiratory Medicine and Allergy; Aarhus University Hospital; Aarhus Denmark
4. Transplantation laboratory and Heart and Lung Center; University of Helsinki and Helsinki University Hospital; Helsinki Finland
5. Department of Respiratory Medicine and Sleep; Faculty of Medicine; Landspitali University Hospital; University of Iceland; Reykjavik Iceland
6. Department of Respiratory Medicine; Oslo University Hospital; Rikshospitalet Oslo Norway
7. Department of Pulmonary Medicine; University of Tartu; Tartu Estonia
8. Lung Clinic; Tartu University Hospital; Tartu Estonia
9. Unit of Medicine and Clinical Research; Pulmonary Division; Division of Respiratory Medicine; University of Eastern Finland and Center of Medicine and Clinical Research; Kuopio Finland
10. Respiratory research; Research Unit of Internal Medicine; Medical Research Center; University of Oulu and Oulu University Hospital; Oulu Finland
11. Kuopio University Hospital; Kuopio Finland