@article{ref1,
title="The production by liquid nitrogen of acute closed lesions",
journal="Surgery, gynecology and obstetrics",
year="1953",
author="Clasen, R. A. and Brown, D. V. and Leavitt, S. and Hass, G. M.",
volume="96",
number="5",
pages="605-616",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0039-6087",
doi="",
url="http://dx.doi.org/"
}