1. Department of Urology, University of Washington Medical Center, Seattle, Washington, USA.
2. Cleveland Clinic, Glickman Urological and Kidney Institute, Cleveland, Ohio, USA.
3. Department of Urology, Hôpital Tenon, Université Pierre et Marie Curie Paris 6, Paris, France.
4. Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, Ohio, USA.
5. Department of Urology, Cleveland Clinic Florida, Weston, Florida, USA.