Myocardial perfusion disturbonces detected by tc-99m microsphere scintigraphy in chagas' patients with angiographicaly normal coronary arteries - Marin Neto, J A; Marzulo, P; Pintya, A A; Maciel, B C; Gallo Junior, L; L'abbate, A (Congress of the European Society of Cardiology, 1994)