@article{articlef91881e7,
title   = {Proximal and distal esophageal contractions inpatients with vigorous or classic esophageal chagas' disease},
author = {Dantas, Roberto Oliveira and Aprile, Lilian Rose Otoboni},
year = {2005},
doi = {10.1590/s0004-28032005000100004},
journal   = {Arquivos de Gastroenterologia}
}