@article{ref1,
title="Outbreak of illness in a school chorus. Toxic poisoning or mass hysteria?",
journal="New England journal of medicine",
year="1983",
author="Small, G. W. and Borus, J. F.",
volume="308",
number="11",
pages="632-635",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-4793",
doi="10.1056/NEJM198303173081105",
url="http://dx.doi.org/10.1056/NEJM198303173081105"
}