@article{ref1,
title="Survival, alcohol and deaths in ankylosing spondylitis",
journal="British journal of rheumatology",
year="1998",
author="Calin, A.",
volume="37",
number="6",
pages="600-601",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0263-7103",
doi="",
url="http://dx.doi.org/"
}