1 Barbara Volcker Center for Women and Rheumatic Diseases, Division of Rheumatology, Hospital for Special Surgery; Weill Cornell Medicine, New York, NY, USA.
2 Vascular Medicine Division and Regional Diseases, Université de Lorraine, Inserm, DCAC, and CHRU-Nancy, F-54000, Nancy, France.
3 Academic Department of Vascular Surgery, School of Cardiovascular and Metabolic Medicine & Sciences, King's College, London, UK.
4 Antiphospholipid Standardization Laboratory, University of Texas Medical Branch, Galveston, Texas, USA.
5 Coagulation Laboratory, Department of Laboratory Medicine, Ghent University Hospital, Department of Diagnostic Sciences, Ghent University, Ghent, Belgium.
6 Barbara Volcker Center for Women and Rheumatic Diseases, Division of Rheumatology, Hospital for Special Surgery; Weill Cornell Medicine, New York, NY, USA erkand@hss.edu.