[1] Univ Mainz, Dept Med 3, D-6500 Mainz, Germany
[2] Univ Mainz, Dept Urol, D-6500 Mainz, Germany
[3] Univ Witten Herdecke, Dept Pathol, D-5810 Witten, Germany
[4] Canji Inc, San Diego, CA USA
[5] Essex Pharma, Munich, Germany
[6] Schering Plough Res Inst, Kenilworth, NJ USA