1. University of Colorado School of Medicine, Denver, CO, USA
2. University of Western Ontario, Department of Surgery, Division of Urology, London, Ontario, Canada
3. University of California, San Francisco, Department of Urology, CA, USA
4. University of Ottawa, The Ottawa Hospital Civic Campus, B3 – Division of Urology, 1053 Carling Avenue, Ottawa, K1Y 4E9, Canada.