1. Department of Urology and Andrology, Astana Medical University, Astana, Kazakhstan
2. Department of Urology, Ng Teng Fong General Hospital, Singapore, Singapore
3. Urology Unit, Azienda Ospedaliero-Universitaria delle Marche, Polytechnic University of Marche, Ancona, Italy
4. Department of Urology, Sindelfingen Medical Center, University of Tuebingen, Germany
5. Varun kidney hospital and Prasutigarh, Department of urology, Surat, India
6. Apex urology and stone center, Castle Hayne, North Carolina, USA
7. Department of Urology, University Hospital Southampton NHS Trust, Southampton, UK