1. Department of Urology, Karolinska University Hospital in Huddinge, Stockholm, Sweden
2. Department of Surgery, County Hospital Gävle, Gävle, Sweden
3. Department of Surgery, County Hospital Blekinge, Karlskrona, Sweden
4. Department of Surgery, County Hospital Bollnäs, Bollnäs, Sweden
5. Department of Urology, Uppsala University Hospital, Uppsala, Sweden
6. Division of Urology, Institution for Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden