1. Clinical Division of Hematology and Hemostaseology, Department of Medicine I, Medical University of Vienna, Vienna, Austria;
2. Comprehensive Cancer Center Vienna, Vienna, Austria;
3. Clinical Division of Oncology, Department of Medicine I, Medical University of Vienna, Vienna, Austria;
4. Clinical Division of Oncology, Department of Medicine, Medical University of Graz, Graz, Austria;
5. Department of Blood Group Serology and Transfusion Medicine,
6. Clinical Institute of Pathology,
7. Department of Surgery,
8. Institute of Cancer Research, Department of Medicine I, and
9. Institute of Neurology, Medical University of Vienna, Vienna, Austria; and
10. Thrombosis and Hemostasis Program, McAllister Heart Institute, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC