@article{ref1,
title="Unusual swallowed foreign bodies",
journal="International surgery",
year="1978",
author="Singh, K. J.",
volume="63",
number="1",
pages="47-47",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0020-8868",
doi="",
url="http://dx.doi.org/"
}