@article{ref1,
title="Poison control centers in Pennsylvania",
journal="Pennsylvania medical journal",
year="1966",
author="",
volume="69",
number="2",
pages="78-79",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0096-0667",
doi="",
url="http://dx.doi.org/"
}