Microflora in proximal jejunum in patients with chagasic megacolon: before and after surgical treatment - Quintanilha, A G; Gama, Angelita Habr; Kiss, D. R; Machado, W. M; Bocchini, S. F.; Campos, Mario Julio Avila; Saad, W. A; Rodrogues, J. Gama; Pinotti, Henrique Walter (Biennial Congress Colon and Rectal Surgeons, 1996)