1. Division of Urology, Duke University, Durham, North Carolina.
2. Glickman Institute of Urology, Cleveland Clinic, Cleveland, Ohio.
3. Urology Department, Al Kasr Al Aini Hospital, Cairo University, Giza, Egypt.
4. Karmanos Cancer Center, Wayne State University School of Medicine, Detroit, Michigan.
5. Department of Urology, East Virginia Medical School, Norfolk, Virginia.
6. Florida Hospital, Orlando, Florida.
7. Department of Urology, Oncology and Pathology, Johns Hopkins School of Medicine, Baltimore, Maryland.