[1] Univ Basel Hosp, Dept Urol, CH-4031 Basel, Switzerland
[2] Univ Basel Hosp, Dept Surg, CH-4031 Basel, Switzerland
[3] Univ Basel Hosp, Div Transplantat Immunol & Nephrol, CH-4031 Basel, Switzerland
[4] Univ Basel Hosp, Dept Anaesthesia, CH-4031 Basel, Switzerland
[5] Univ Munich, Dept Urol, Munich, Germany