@article{article86c5e835,
title   = {Advanced achalasia of the esophagus},
author = {Moryama, S and Salvestro, M L and Reina, C and Carmona, M A and Ferreira, Eugênio Américo Bueno and Cohen, R V and Anania, R},
year = {1993},
journal   = {Postgraduate General Surgery}
}