1. Department of Cardiothoracic Surgery, University Medical Center Groningen; University of Groningen; Groningen The Netherlands
2. Department of Pulmonary Medicine, University Medical Center Groningen; University of Groningen; Groningen The Netherlands
3. Department of Radiology, University Medical Center Groningen; University of Groningen; Groningen The Netherlands
4. Department of Epidemiology, University Medical Center Groningen; University of Groningen; Groningen The Netherlands
5. Department of Pathology, University Medical Center Groningen; University of Groningen; Groningen The Netherlands