1. Departments of Hospital Pharmacy and Internal Medicine Erasmus MCUniversity Medical Center Rotterdamthe Netherlands
2. Department of Haematology Erasmus MCUniversity Medical Center Rotterdamthe Netherlands
3. Department of Clinical Epidemiology Leiden University Medical Center Leidenthe Netherlands
4. Department of Thrombosis and Hemostasis Leiden University Medical Center Leidenthe Netherlands
5. Thrombosis Service Star‐shl Rotterdam the Netherlands