1. Department of Radiology Massachusetts General Hospital, Harvard Medical School Boston Massachusetts USA
2. Division of Pharmacology and Vascular Medicine, Department of Internal Medicine Erasmus University Medical Center Rotterdam the Netherlands
3. ETB‐BISLIFE, Heart Valve Bank Beverwijk the Netherlands
4. Department of Neurology Leiden University Medical Center Leiden the Netherlands
5. Department of Human Genetics Leiden University Medical Center Leiden the Netherlands
6. Department of Neurology Massachusetts General Hospital, Harvard Medical School Boston Massachusetts USA