Long-Term Results After a Telephone Intervention in Chronic Heart Failure: DIAL (Randomized Trial of Phone Intervention in Chronic Heart Failure) Follow-Up - Ferrante, Daniel; Varini, Sergio; Macchia, Alejandro; Soifer, Saúl; Badra, Raul; Nul, Daniel; Grancelli, Hugo; Doval, Hernán (Journal of the American College of Cardiology (JACC), 2010)