@article{ref1,
title="Opticon flutter",
journal="New England journal of medicine",
year="1988",
author="Sturm, J. and Graf, D.",
volume="318",
number="9",
pages="584-584",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-4793",
doi="",
url="http://dx.doi.org/"
}