@article{ref1,
title="Tragic events of April 1996",
journal="Annals of internal medicine",
year="2001",
author="Tiller, K. E.",
volume="134",
number="5",
pages="424-5; author reply 425",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-4819",
doi="",
url="http://dx.doi.org/"
}