Is peritoneal dialysis suitable technique CKD patients over 65 years? A prospective multicenter study Jose Portolés; Almudena Vega; Enrique Lacoba; Paula López-Sánchez; Mario Botella; Claudia Yuste; Catalina Martín Cleary; Sandra Sanz Ballesteros; Silvia González Sanchidrian; Luisa Sánchez García; Agustín Carreño; M. Auxiliadora Bajo; Darío Janeiro;