@article{ref1,
title="Hangovers",
journal="British medical journal: BMJ",
year="1997",
author="Calder, I.",
volume="314",
number="7073",
pages="2-3",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}