1. From the Department of Nuclear Medicine (A.P.P., D.C.B., C.G., M.A.M., F.M., E.v.F., T.A.F., B.H.M., J.S., O.G., R.R.B., P.A.K.) and Department of Cardiology, University Heart Center (A.P.P., T.F.L., O.G.), University Hospital Zurich, Ramistr 100, NUK D 6, CH-8091 Zurich, Switzerland.