@article{article272d9783,
title   = {Removal of a foreign body from the upper gastrointestinal tract with a flexible endoscope: a prospective study},
author = {Chaves, D. M. and Ishioka, S. and Félix, V. N. and Sakai, P. and Gama-Rodrigues, J. J.},
year = {2005},
journal   = {Endoscopy}
}