[1] Sahlgrens Univ Hosp, Dept Urol, S-41345 Gothenburg, Sweden
[2] Hop Henri Mondor, Dept Urol, F-94010 Creteil, France
[3] CHU Grenoble, Dept Radiat Therapy, F-38043 Grenoble, France
[4] Univ Hosp Cologne, Dept Urol, Cologne, Germany
[5] Kantonspital St Gallen, Dept Urol, St Gallen, Switzerland
[6] Univ Hosp Gasthuisberg, Dept Urol, B-3000 Louvain, Belgium
[7] Caritas Krankenhaus, Dept Urol, Bad Mergentheim, Germany
[8] Santa Maria Misericordia Hosp, Dept Urol, Udine, Italy