@article{ref1,
title="Test your knowledge of transient vision loss",
journal="Aviation, space, and environmental medicine",
year="1998",
author="Carpenter, S.",
volume="69",
number="2",
pages="178-179",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0095-6562",
doi="",
url="http://dx.doi.org/"
}