@article{ref1,
title="Wintertime common sense: how much do you have?",
journal="Pennsylvania medicine",
year="2001",
author="Baldwin, F.",
volume="104",
number="1",
pages="18-20",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0031-4595",
doi="",
url="http://dx.doi.org/"
}