1. Faculty of Medicine, University of Helsinki, Helsinki, Finland;
2. Department of Pathology, University of Helsinki, and HUSLAB, Helsinki University Hospital, Helsinki, Finland;
3. Department of General Thoracic and Esophageal Surgery, Heart and Lung Center, Helsinki University Hospital, Helsinki, Finland;
4. Department of Pulmonary Medicine, Heart and Lung Center, Helsinki University Hospital, Helsinki, Finland;
5. Occupational Medicine, Finnish Institute of Occupational Health, Helsinki, Finland;
6. Research Programs Unit, Translational Cancer Biology, University of Helsinki, Helsinki, Finland