1. Urology Department Hospital Universitario Marqués de Valdecilla Santander Spain
2. Urology Department Hospital Universitario Ramón y Cajal Madrid Spain
3. Urology Department Hospital La Princesa Madrid Spain
4. Urology Department Hospital Son LLatzer Palma de Mallorca Spain
5. Urology Department Hospital Universitari i Politecnic La Fe Valencia Spain
6. Urology Department Fundación Puigvert Barcelona Spain