@article{ref1,
title="Beer cap esophagitis",
journal="Gastrointestinal endoscopy",
year="1970",
author="Munoz, V. A.",
volume="17",
number="2",
pages="72-73",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0016-5107",
doi="",
url="http://dx.doi.org/"
}