@article{ref1,
title="Cold injury and clubbing: a possible relationship",
journal="Chest",
year="1973",
author="Soman, V. and Hershkowitz, M.",
volume="64",
number="2",
pages="256-259",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0012-3692",
doi="",
url="http://dx.doi.org/"
}