1. Department of Urology, McGill University Health Centre, Montreal, Canada.
2. Department of Urology, Cottolengo Hospital, Torino, Italy.
3. Department of Urology, University of California, Irvine, California.
4. Department of Urology, Asklepios Hospital Barmbek, Hamburg, Germany.
5. Department of Urology, Skåne University Hospital, Malmö, Sweden.
6. Department of Urology, Centro de Litiasis (CELIT) Hospital Italiano, Buenos Aires, Argentina.
7. R. G. Stone Urology and Laparoscopy Hospital, Mumbai, India.
8. Department of Urology, AMC University Hospital, Amsterdam, The Netherlands.