1. Cardiovascular Imaging Research Center and Core Laboratory (M.F., G.H., J.L.C.), Minneapolis Heart Institute Foundation, MN.
2. Minneapolis Heart Institute at Abbott Northwestern Hospital, MN (M.F., V.N.B., S.G., M.W.D., G.H., H.S., M.G., M.E.-S., J.R.L., J.L.C., P.S.).
3. Valve Science Center (V.N.B., S.G., M.W.D., H.S., M.G., M.E.-S., J.R.L., P.S.), Minneapolis Heart Institute Foundation, MN.