Jonathan Bergman1, Christopher S Saigal2, Mark S Litwin3. 1. Department of Urology, David Geffen School of Medicine, UCLA (University of California Los Angeles), Los Angeles, California2Department of Family Medicine, David Geffen School of Medicine, UCLA, Los Angeles, California3Veterans Health Administration, Grea. 2. Department of Urology, David Geffen School of Medicine, UCLA (University of California Los Angeles), Los Angeles, California3Veterans Health Administration, Greater Los Angeles Healthcare System, Los Angeles, California4RAND Corporation, Santa Monica, Cal. 3. Department of Urology, David Geffen School of Medicine, UCLA (University of California Los Angeles), Los Angeles, California5Department of Health Policy and Management, Fielding School of Public Health, UCLA, Los Angeles, California.