@article{article499f152e,
title   = {Response of the lower esophageal sphincter to pentagastrin on patients with megaesophagus secondary to chagas' disease},
author = {Moraes Filho, Joaquim Prado Pinto de and Bettarello, A},
year = {1989},
journal   = {Revista do Hospital das Clinicas da Faculdade de Medicina da Universidade de Sao Paulo}
}