@article{ref1,
title="Seasonal variation in occurrence of acute atrial fibrillation and relation to air temperature and sale of alcohol",
journal="American journal of cardiology",
year="1990",
author="Kupari, M. and Koskinen, P.",
volume="66",
number="20",
pages="1519-1520",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0002-9149",
doi="",
url="http://dx.doi.org/"
}