1. NorthShore University Health System, Evanston Hospital, IL (T.F.)
2. Harvard Clinical Research Institute, Brigham and Women’s Hospital, Boston, MA (L.M.)
3. Ohio State University Wexner Medical Center, Cambridge (R.K., S.L.)
4. Northwestern University Feinberg School of Medicine, Chicago, IL (M.J.R., S.J.S.)
5. University Medical Center Groningen, The Netherlands (P.v.d.H.)
6. Cardiovascular Center Aalst, Belgium (M.P.)
7. Cardiovascular Institute of the South, Houma, LA (P.S.F.)
8. Alfred Hospital and Baker Heart and Diabetes Institute Melbourne, Australia (D.M.K.)
9. University of Glasgow, Scotland (M.C.P.)
10. OhioHealth Heart and Vascular Physicians, Riverside Methodist Hospital, Columbus (A.B.)
11. University of Michigan and VA Ann Arbor Healthcare System (S.L.H.)
12. Hospital of the University of Pennsylvania, Philadelphia (R.F.M.)
13. Medical University of South Carolina, Charleston (S.L., C.D.N.)
14. Boston University School of Public Health, MA (J.M.M.)
15. Cardiovascular Research Foundation, New York (D.B.).