Preoperative assesment in cases of chagasic megacolon with moderate malnutrition - Vieira, M J F; Habr Gama, Angelita; Gama Rodrigues, Joaquim José; Faintuch, Joel; Waitzberg, Dan Linetzky; Pinotti, Henrique Walter (Congresso Latino-Americano de Coloproctologia, 1995)