@article{ref1,
title="Passover and plague",
journal="Perspectives in biology and medicine",
year="1998",
author="Blaser, M. J.",
volume="41",
number="2",
pages="243-256",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0031-5982",
doi="",
url="http://dx.doi.org/"
}