1. Department of Surgery (Urology Service), Memorial Sloan-Kettering Cancer Center, New York, New York
2. Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, New York
3. Department of Pathology, Memorial Sloan-Kettering Cancer Center, New York, New York
4. Department of Urology, Weill Medical College of Cornell University, New York, New York