1. Van Creveldkliniek/Department of Hematology; University Medical Center Utrecht; Utrecht; The Netherlands
2. Department of Cardiology; Radboud University Nijmegen Medical Centre; Nijmegen; The Netherlands
3. Department of Hematology; HagaZiekenhuis, Leyweg; Den Haag; The Netherlands
4. Department of Cardiology; University Medical Center Utrecht; Utrecht; The Netherlands