1. Division of Urology, Cedars-Sinai Medical Center, Los Angeles, California
2. Department of Urology, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, California
3. Department of Health Policy and Management, Fielding School of Public Health, University of California-Los Angeles, Los Angeles, California
4. Department of Urology, Weill Cornell School of Medicine, Cornell University, New York, New York