1. Cardiology Clinic, Thrombosis Centre, Department of Cardiac Thoracic and Vascular Sciences, and
2. Rheumatology Unit, Department of Medicine, University of Padua, Padua, Italy;
3. Rheumatology and Clinical Immunology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy;
4. Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy;
5. Section of Internal and Cardiovascular Medicine, Department of Medicine, University of Perugia, Perugia, Italy;
6. Department of Cellular Biotechnologies and Hematology Thrombosis Centre, Sapienza University of Rome, Rome, Italy;
7. Transfusion Medicine, District Hospital, Merate, Italy;
8. Angiology Unit, Department of Internal Medicine, Santa Maria Nuova Hospital, Reggio Emilia, Italy;
9. Hematology Department, San Bortolo Hospital, Vicenza, Italy;
10. Department of Immunohematology and Transfusion Medicine and Hemostasis and Thrombosis Center, Hospital Papa Giovanni XXIII, Bergamo, Italy;
11. A. Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda–Ospedale Maggiore Policlinico, Milan, Italy;
12. Hemostasis and Thrombosis Center, Laboratory Medicine Department, Azienda Socio-Sanitaria Territoriale, Cremona, Italy;
13. Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy; and
14. Division of Rheumatology, Department of Clinical Sciences and Community Health, Ospedale Gaetano Pini, University of Milan, Milan, Italy