@article{ref1,
title="Trauma in relation to cancer; discussion based on a report of two cases",
journal="Delaware medical journal",
year="1957",
author="Pollak, O. J.",
volume="29",
number="12",
pages="309-312",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0011-7781",
doi="",
url="http://dx.doi.org/"
}