Effects of Exercise Training on Myocardial Blood Flow Reserve in Patients With Heart Failure and Left Ventricular Systolic Dysfunction - Santos, João Manoel Theotonio dos; Kowatsch, Ingrid; Tsutsui, Jeane Mike; Negrão, C. E.; Canavesi, Nancy; Carvalho Frimm, Clovis; Mady, Charles; Ramires, José Antonio Franchini; Mathias Júnior, Wilson (American Journal of Cardiology, 2010)