Correlation between BNP levels and Doppler echocardiographic parameters of left ventricle filling pressure in patients with Chagasic cardiomyopathy. - Oliveira BM; Botoni FA; Ribeiro AL; Pinto AS; Reis AM; Nunes Mdo C; Rocha MO (Echocardiography (Mount Kisco, N.Y.), 2009)