1. Department of Urology, M. D. Anderson Cancer Center, Houston, Texas
2. Department of Radiology, University of Calgary, Calgary, Alberta, Canada
3. Department of Surgery and Oncology, Tom Baker Cancer Center, Calgary, Alberta, Canada
4. Society for Cryosurgery, Trieste, Italy
5. Department of Urology, Columbia University, New York, New York
6. Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, Ohio