1. From the Department of Neurology and Neurosurgery, Brain Center Rudolf Magnus (E.J.V., A.A., L.J.K.), University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
2. Julius Center for Health Sciences and Primary Care (E.J.V., A.A., J.P.G.), University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
3. IVPE, Hopital Privé Paul D’Egine, Champigny, France (J.-P.B.)
4. Department of Vascular Surgery (G.J.d.B.), University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
5. Department of Brain Repair and Rehabilitation, UCL Institute of Neurology, University College London, United Kingdom (M.M.B., L.H.B.)
6. MRC Population Health Research Unit, Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, United Kingdom (R.B.)
7. Department of Neurology, Hôpital Sainte-Anne, Université Paris-Descartes, DHU Neurovasc Sorbonne Paris Cité, INSERM U894, Paris, France (D.C., J.-L.M.)
8. Department of Vascular and Endovascular Surgery/Vascular Center, Klinikum rechts der Isar, Technical University Munich, Germany (H.-H.E.)
9. Department of Vascular Surgery, Medical University of Innsbruck, Austria (G.F.)
10. Department of Medical Statistics, London School for Hygiene and Tropical Medicine, United Kingdom (J.G.)
11. Nuffield Department of Surgical Sciences, John Radcliffe Hospital, Oxford, United Kingdom (A.H.)
12. Department of Radiology (J.H.), University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
13. Department of Biostatistics, UAB School of Public Health, Birmingham, AL (G.H.)
14. Clinic for Radiology and Neuroradiology, UKSH Campus Kiel, Germany (O.J.)
15. Cardiovascular Associates of the Southeast, Birmingham, AL (G.S.R.)
16. Department of Neurology and Stroke Center, Department of Clinical Research, University Hospital Basel, University of Basel, Switzerland (L.H.B.)
17. Department of Neurology, Mayo Clinic, Jacksonville, FL (T.G.B.)
18. Department of Neurology, University of Heidelberg Medical School, Germany (P.A.R.).