1. Department of Urology, SUNY-Stony Brook University School of Medicine, Stony Brook, New York.
2. Department of Pathology Tanta University, Tanta, Egypt.
3. Department of Surgery, Division of Urologic Surgery, Washington University School of Medicine, St. Louis, Missouri.
4. Department of Urology, Indiana University, School of Medicine, Indianapolis, Indiana.
5. Department of Urology, Columbia University, College of Physicians and Surgeons, New York, New York.
6. Bostwick Laboratories, Richmond, Virginia.