Cardiorenal unit in advanced cardiorenal disease: Clinical impact and reduction of hospital costs Eliecer Soriano Payá; Ismael Arco Adamuz; Ana María García Girón; Francisco José Bermúdez Jiménez; Elisa Berta Pereira Pérez; Laura Jordán Martínez; María Carmen Olvera-Porcel; Leticia García Mochón; Silvia López Fernández; María José Espigares Huete;