1 Departments of Medicine, Stanford University School of Medicine, Stanford, California.
2 Departments of Medicine, Stanford University School of Medicine, Stanford, California; Urology, Stanford University School of Medicine, Stanford, California; Veterans Affairs Palo Alto Health Care System, Palo Alto, California.
3 Departments of Medicine, Stanford University School of Medicine, Stanford, California; Urology, Stanford University School of Medicine, Stanford, California; Veterans Affairs Palo Alto Health Care System, Palo Alto, California. Electronic address: jleppert@stanford.edu.