1. Saint Luke’s Mid America Heart Institute and University of Missouri-Kansas City, MO (S.V.A.).
2. Edwards Lifesciences, Inc, Irvine, CA (Y.Z.).
3. Cardiovascular Research Foundation, NY (M.B.L., M.A., D.J.C.).
4. Columbia-Presbyterian Hospital University Medical Center, NY (M.B.L., M.A., C.R.S.).
5. St Paul’s Hospital, University of British Columbia, Vancouver, Canada (J.S.).
6. Piedmont Heart Institute, Atlanta, GA (V.H.T.).
7. Baylor Scott & White Healthcare, Plano, TX (M.J.M.).
8. St. Francis Hospital, Roslyn, NY (D.J.C.).