1. From the Department of MR and CT Contrast Media Research (J.B., J.L., G.J., T.F., H.P.) and Research and Pre-Clinical Statistics Group (H.F.U.), Bayer, Müllerstraße 178, 13353 Berlin, Germany; Department of In Vivo/Radioanalytics (A.T.) and Department of Bioanalytics LC-MS 3 & MALDI (U.T.), Bayer, Wuppertal, Germany; Department of Neuropharmacology, QPS Austria, Grambach, Austria (J.N., M.P.); and External Corporate Employment Resources, Bayer U.S., Whippany, NJ (T.B.).