1. Department of Surgery, Urology Service, Memorial Sloan-Kettering Cancer Center, New York, New York.
2. Department of Urology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York.
3. Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, New York.
4. Department of Urology, Weill Cornell Medical College of Cornell University, New York, New York.