1. Division of Hematology Department of Medicine Duke University Medical Center Durham North Carolina USA
2. Department of Pathology Duke University Medical Center Durham North Carolina USA
3. RTI International Research Triangle Park North Carolina USA
4. Department of Medicine McMaster University Hamilton Ontario Canada
5. Barbara Volcker Center for Women and Rheumatic Diseases Department of Rheumatology, Hospital for Special Surgery Weill Cornell Medicine New York New York USA
6. Division of Rheumatology Department of Medicine Centre de recherche du CHU de Québec—Université Laval Quebec City Quebec Canada
7. Division of Hematology Department of Medicine University of Washington Medical Center Seattle Washington USA
8. Department of Biostatistics and Bioinformatics Duke University Medical Center, and Duke Clinical Research Institute Durham North Carolina USA
9. Departments of Neurology and Emergency Medicine State University of New York Downstate Medical Center Brooklyn New York USA
10. Department of Neurology Kings County Hospital Center Brooklyn New York USA