1 University of Colorado Anschutz School of Medicine, Aurora, CO.
2 Department of Surgery/Urology, University of Colorado Anschutz Medical Campus, Aurora, CO.
3 University of Colorado Anschutz School of Medicine, Aurora, CO; Department of Surgery/Urology, University of Colorado Anschutz Medical Campus, Aurora, CO; Department of Surgery/Urology, Rocky Mountain Regional VA Medical Center; University of Colorado Anschutz Medical Campus, Aurora, CO. Electronic address: Granville.lloyd@cuanschutz.edu.