1. Department of General Practice; University of Groningen; University Medical Center Groningen; Groningen
2. Emory University School of Medicine; Atlanta; GA
3. Department of Urologic Surgery; Vanderbilt University; Nashville; TN
4. University of Bristol; Bristol; UK
5. Division of Geriatric Medicine; UMass Memorial Medical Center and UMass Medical School; Worcester; MA
6. Urology Institute; University Hospitals Case Medical Center; Cleveland; OH
7. New England Research Institutes; Watertown; MA
8. Department of Urology; Maastricht University Medical Center; Maastricht; The Netherlands
9. Division of Urology; Perelman School of Medicine at the University of Pennsylvania; Philadelphia; PA