1. From the Human and Molecular Genetics Center (M.F., U.B., A.B., H.J.J.), Medical College of Wisconsin, Milwaukee, Wis; the Clinic for Internal Medicine II (M.F., S.H., A.B., C.H., G.R.), University of Regensburg, Regensburg, Germany; the Clinic for Internal Medicine II (B.M., J.E., H.S.), University of Luebeck, Luebeck, Germany; and the LVA Cardiac Rehabilitation Clinic Höhenried (G.K.), Bernried, Germany.