1. Departments of Urology, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, California
2. Service d’Urologie, Centre Hospitalier Universitaire Pontchaillou, Rennes, France
3. Service d’Urologie, Centre Hospitalier Universitaire Henri Mondor, Créteil, France
4. Urologische Universitätsklinik, Universität Magdeburg, Germany
5. Dipartimento di Scienze Chirurgiche, Divisione di Urologia e Centro Trapianti, Università di Foggia, Italy
6. Departments of Medicine, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, California