1. Department of Urology, University Hospital Zürich, University of Zürich, Zürich, Switzerland
2. Department of Urology, Mater Misericordiae University Hospital, Dublin, Ireland
3. Department of Surgery, Division of Urology, University Health Network, University of Toronto, Toronto, Ontario, Canada
4. Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York