TY - JOUR T1 - Electrophysiologic study in chronic Chagas' heart disease JO - Sao Paulo Medical Journal A1 - Scanavacca, MaurĂ­cio A1 - Sosa, Eduardo SN - 1516-3180 UL - 10.1590/S1516-31801995000200016 VL - 113 Y1 - 1995 PB - Brasil ER -