1. Department of Urology, University of Washington School of Medicine, Seattle, Washington, USA.
2. Department of Urology, University of Arizona College of Medicine, Tucson, Arizona, USA.
3. Department of Urology, University of California San Francisco, San Francisco, California, USA.
4. Department of Urology, University of California San Diego, San Diego, California, USA.
5. Division of Urology, Department of Veterans Affairs Medical Center, Seattle, Washington, USA.