1. Nephrology Service and Renal Transplant Unit; Hospital Clínic de Barcelona; Barcelona Spain
2. Department of Nephrology; Hospital 12 de Octubre; Madrid Spain
3. Renal Transplant Unit; Department of Nephrology; Fundación Puigvert; Barcelona Spain
4. Department of Nephrology; Hospital Dr. Peset; Valencia Spain
5. Department of Nephrology; Hospital Virgen de las Nieves; Granada Spain
6. Department of Nephrology; Hospital Son Espases; Mallorca Spain
7. Department of Nephrology; Hospital Virgen del Rocío; Sevilla Spain
8. Department of Nephrology; Hospital Reina Sofia; Córdoba Spain
9. Department of Nephrology; Hospital Central de Asturias; Oviedo Spain
10. Department of Nephrology; Hospital Carlos Haya; Málaga Spain
11. Department of Nephrology; Hospital Miguel Servet; Zaragoza Spain
12. Department of Nephrology; Hospital Virgen de la Arrixaca; Murcia Spain
13. Department of Nephrology; Hospital del Mar; Barcelona Spain
14. Department of Nephrology; Hospital Clínico de Santiago de Compostela; Santiago de Compostela (A Coruña) Spain
15. Department of Nephrology; Hospital Marqués de Valdecilla; Santander Spain