@article{ref1,
title="Perforation of the esophagus from external trauma or blast injuries",
journal="Diseases of the chest",
year="1967",
author="Randolph, H. and Melick, D. W. and Grant, A. R.",
volume="51",
number="2",
pages="121-124",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0096-0217",
doi="",
url="http://dx.doi.org/"
}