1. From the Departments of Molecular Biology (E.v.R., J.F., L.B.S., E.N.O.), Cardiovascular and Thoracic Surgery (M.J.D.), Pathology (J.S.), and Internal Medicine (J.A.H.), University of Texas Southwestern Medical Center, Dallas; Department of Radiotherapy (V.L.T.), VU University Medical Center, Amsterdam, The Netherlands; and Department of Cardiology (H.J.C., L.J.D.W.), Maastricht University Medical Center, The Netherlands.