@article{articlec7920e05,
title   = {Treatment of ring slippage after gastric bypass: long-term results after endoscopic dilation with an achalasia balloon (with videos)},
author = {Campos, Josemberg Marins and Evangelista, Luis Fernando and Ferraz, Álvaro Antônio B and Galvão Neto, Manoel P and Moura, Eduardo Guimarães H. de and Sakai, Paulo and Ferraz, Edmundo M},
year = {2010},
doi = {10.1016/j.gie.2010.01.057},
journal   = {Gastrointestinal endoscopy}
}