1. Department of Urology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
2. Department of Family Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
3. Veterans Health Affairs-Greater Los Angeles, Los Angeles, CA, USA
4. Department of Community Health Sciences, UCLA Fielding School of Public Health, Los Angeles, CA, USA
5. University of California Irvine School of Medicine, Irvine, CA, USA
6. Department of Health Policy and Management, UCLA Fielding School of Public Health, Los Angeles, CA, USA