@article{ref1,
title="Resident and fellow section",
journal="Headache",
year="2012",
author="Levin, M.",
volume="52",
number="1",
pages="153-157",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0017-8748",
doi="10.1111/j.1526-4610.2011.02082.x",
url="http://dx.doi.org/10.1111/j.1526-4610.2011.02082.x"
}