@article{ref1,
title="Endoscopic removal of pharmacobezoar of slow release theophylline",
journal="British medical journal (clinical research edition)",
year="1986",
author="Cereda, J. M. and Scott, J. and Quigley, E. M.",
volume="293",
number="6555",
pages="1143-1143",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0267-0623",
doi="",
url="http://dx.doi.org/"
}