@article{ref1,
title="Multiple rib fractures. (Case P58)",
journal="Canadian Medical Association journal",
year="1971",
author="",
volume="104",
number="3",
pages="222-224",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0008-4409",
doi="",
url="http://dx.doi.org/"
}