1 Department of Urology, University Hospital Essen, University Duisburg-Essen, Essen, Germany; West German Cancer Center, University Dusiburg-Essen, University Hospital Essen, Germany. Electronic address: [email protected].
2 Department of Urology, University Hospital Essen, University Duisburg-Essen, Essen, Germany; West German Cancer Center, University Dusiburg-Essen, University Hospital Essen, Germany.
3 West German Cancer Center, University Dusiburg-Essen, University Hospital Essen, Germany; Department of Nuclear Medicine, University Hospital Essen, University Duisburg-Essen, Essen, Germany.