Spanish consensus document for acceptance and rejection of kidneys from expanded criteria donors - Lledo-Garcia, E; Riera, L; Passas, J; Paredes, D; Morales, J M; Sanchez-Escuredo, A; Burgos-Revilla, F J; de Andres Belmonte, A; Oppenheimer, F; Rodriguez-Ferrero, M L; Sole, M; Matesanz, R; et al. (Clinical Transplantation, 2014)