1. University Hospitals Case Medical Center and Department of Urology; Urology Institute; Case Western Reserve University School of Medicine; Cleveland Ohio
2. Centre de recherche de l'Institut universitaire de gériatrie de Montréal; Montreal Canada
3. McGill University; Montreal Canada
4. Institute for Regenerative Medicine; Wake Forest University School of Medicine; Winston Salem North Carolina
5. Institute for Clinical Medicine; Aarhus University; Aarhus Denmark
6. Faculty of Medicine; Université de Montréal; Montreal Canada