1. Department of Internal Medicine, University of Michigan, Ann Arbor, MI;
2. American Thrombosis and Hemostasis Network, Chicago, IL;
3. Department of Medicine, University of Pittsburgh, Pittsburgh, PA;
4. Department of Medicine, Georgetown University, Washington, DC;
5. Orthopedic Hospital, Los Angeles, CA;
6. Indiana Hemophilia and Thrombosis Center, Indianapolis, IN;
7. Department of Medicine, University of North Carolina, Chapel Hill, NC;
8. Department of Pediatrics, University of Colorado, Anschutz Medical Campus, Aurora, CO;
9. Department of Medicine, University of Pennsylvania, Philadelphia, PA;
10. Departments of Medicine and Pediatrics, Emory University, Atlanta, GA;
11. Department of Medicine, The Ohio State University, Columbus, OH;
12. Department of Medicine, Penn State Milton S. Hershey Medical Center, Hershey, PA;
13. Department of Medicine, Henry Ford Hospital, Detroit, MI;
14. Department of Medicine, University of California, San Diego, CA;
15. Blood Center of Wisconsin, Milwaukee, WI;
16. Department of Medicine, Vanderbilt University, Nashville, TN;
17. Mary M. Gooley Hemophilia Center, Rochester, NY;
18. Department of Medicine, University of Texas Health Science Center and McGovern Medical School, Houston, TX;
19. Department of Medicine, Tulane University, New Orleans, LA;
20. Bloodworks Northwest, Seattle, WA; and
21. Department of Medicine, University of Washington, Seattle, WA