1. Department of Urology, University of North Carolina, Chapel Hill, North Carolina
2. Department of Urology, Dalhousie University, Halifax, Nova Scotia, Canada
3. Department of Urology, Mayo Clinic Phoenix, Phoenix, Arizona
4. Department of Quantitative Health Sciences, Mayo Clinic Scottsdale, Scottsdale, Arizona
5. Mayo Clinic Alix School of Medicine, Scottsdale, Arizona