1. Functional Proteomics, Medizinisches Proteom-Center, Ruhr-Universitaet Bochum, Universitaetsstr. 150, ZKF, D-44801 Bochum, Germany, Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, Auerbachstr. 112, D-70376 Stuttgart, Germany, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark, and Medical Proteomics & Bioanalytics, Medizinisches Proteom-Center, Ruhr-Universitaet Bochum, Universitaetsstr. 150, ZKF, D-44801 Bochum, Germany