Microvascular myocardial ischemia correlates to improvement of left ventricular systolic function in non-ischemic cardiomyopathy patients with heart failure after long-term oral dipyridamole - Simões, Marcus Vinicius; Schwartzmann, P. V.; Figueiredo, A. B.; Pintya, A. O.; Marques, F.; Maciel, Benedito Carlos (Heart Failure, 2010)