@article{ref1,
title="Accident and health coverage in the United States",
journal="Pennsylvania medical journal",
year="1954",
author="",
volume="57",
number="2",
pages="137-138",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0096-0667",
doi="",
url="http://dx.doi.org/"
}