1. Inova Alexandria Hospital, VA (K.M.S.).
2. Brigham and Women’s Hospital, Harvard Medical School, Boston, MA (S.Z.G., G.P.).
3. University Hospital of Wales and Cardiff University, United Kingdom (A.S.P.S.).
4. University Clinic of Angiology, University Hospital Zurich, Switzerland (N.K.).
5. Mount Carmel Health System, Columbus, OH (N.J.).
6. University of Pittsburgh Medical Center Hamot, Erie, PA (R.M.).
7. CHU Besancon, France (N.M.).
8. University at Buffalo/Great Lakes Cardiovascular, NY (D.Z.).
9. Baylor Scott and White The Heart Hospital Plano, TX (S.S.).
10. Center for Thrombosis and Hemostasis, University Medical Center Mainz, Germany (S.V.K.).