Increased plasma levels of tumor necrosis factor-'alfa' in asymptomatic / "indeterminate" and chagas disease cardiomyopathy patients - Ferreira, Renata Cristina; Ianni, Bárbara M.; Abel, Lucia C. J.; Buck, Paula; Mady, Charles; Kalil, Jorge; Cunha-Neto, Edécio (Memórias do Instituto Oswaldo Cruz, 2003)