1. Department of Thrombosis and Hemostasis; Leiden University Medical Center; Leiden the Netherlands
2. Department of Medical statistics and Bio-informatics; Leiden University Medical Center; Leiden the Netherlands
3. Department of Pulmonology; VU University Medical Center; Amsterdam the Netherlands
4. Department of Radiology and Nuclear Medicine; VU University Medical Center; Amsterdam the Netherlands
5. Department of Cardiac Surgery; VU University Medical Center; Amsterdam the Netherlands