1. Division of Vascular Medicine and Regional Competence Centre for Rare Vascular and Systemic Autoimmune Diseases Nancy Academic Hospital Nancy France
2. Inserm UMR_S 1116 Lorraine University Nancy France
3. Department of Haematology University College London Hospitals NHS Foundation Trust London UK
4. Haemostasis Research Unit, Department of Haematology University College London London UK
5. Centre for Rheumatology, Division of Medicine University College London London UK
6. Department of Medicine Intermountain Medical Center Murray UT USA
7. Department of Internal Medicine University of Utah Salt Lake City UT USA
8. Department of Medicine McMaster University Hamilton Ontario Canada
9. Comprehensive Clinical Trials Unit University College London London UK
10. Perelman School of Medicine University of Pennsylvania Philadelphia PA USA
11. Department of Medicine Ottawa Hospital Research Institute at the University of Ottawa Ottawa Ontario Canada
12. Cardiology Clinic Department of Cardiac‐Thoracic and Vascular Sciences University of Padua Padua Italy
13. Coagulation Laboratory Department of Diagnostic Sciences Ghent University Hospital Ghent Belgium