@article{ref1,
title="Alcohol, alcoholism, the social drinker and the hangover",
journal="Headache",
year="1973",
author="Dalessio, D. J.",
volume="12",
number="4",
pages="173-176",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0017-8748",
doi="",
url="http://dx.doi.org/"
}