@article{ref1,
title="Impacted blister packages",
journal="Gastrointestinal endoscopy",
year="1981",
author="Ito, Yasuhiko and Kasugai, T. and Kobayashi, S.",
volume="27",
number="3",
pages="202-202",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0016-5107",
doi="",
url="http://dx.doi.org/"
}