@article{ref1,
title="Colonic ischemia after verapamil overdose",
journal="Annals of internal medicine",
year="1996",
author="Gutierrez, H. and Jorgensen, M.",
volume="124",
number="5",
pages="e535-e535",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-4819",
doi="10.7326/0003-4819-124-5-199603010-00020",
url="http://dx.doi.org/10.7326/0003-4819-124-5-199603010-00020"
}