@article{ref1,
title="The flail chest. An analysis of 100 patients",
journal="American journal of surgery",
year="1963",
author="Howell, J. F. and Crawford, E. S. and Jordan, G. L. Jr",
volume="106",
number="",
pages="628-635",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9610",
doi="",
url="http://dx.doi.org/"
}