1. School of Science and Technology, Hellenic Open University, 26335 Patras, Greece
2. Department of Urology, Haukeland University Hospital, 5021 Bergen, Norway
3. Department of Clinical, Medicine University of Bergen, 5021 Bergen, Norway
4. European Association of Urology, Young Academic Urologists, Urolithiasis Group, NL-6803 Arnhem, The Netherlands
5. Department of Urology, Erebouni Medical Center, Yerevan 0087, Armenia
6. Department of Urology, Marmara University School of Medicine, Istanbul 34854, Turkey
7. School of Science and Technology, International Hellenic University, 57001 Thessaloniki, Greece
8. Second Department of Urology, Sismanoglio Hospital, National and Kapodistrian University of Athens, 15126 Athens, Greece
9. Department of Urology, University of Southampton, Southampton SO17 1BJ, UK