1. Department of Urology, University of Turku and Turku University Hospital, Turku, Finland
2. Department of Surgery, Division of Urology, Central Hospital of Jyväskylä, Jyväskylä, Finland
3. Department of Information Technology, University of Turku, Turku, Finland
4. Department of Biostatistics, University of Turku, Turku, Finland
5. Department of Urology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
6. Department of Urology, University of Tampere and Tampere University Hospital, Tampere, Finland
7. Department of Urology, University of Oulu and Oulu University Hospital, Oulu, Finland
8. Department of Urology, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland
9. Department of Surgery, Division of Urology, Central Hospital of Lahti, Lahti, Finland
10. Department of Surgery, Division of Urology, Central Hospital of Seinäjoki, Seinäjoki, Finland
11. Department of Surgery, Division of Urology, Central Hospital of Mikkeli, Mikkeli, Finland
12. Department of Surgery, Division of Urology, Central Hospital of Pori, Pori, Finland
13. Department of Surgery, Division of Urology, Central Hospital of Vaasa, Vaasa, Finland