@article{ref1,
title="Fly the graying skies: a question of competency vs age",
journal="Neurology",
year="2007",
author="Sirven, Joseph I. and Morrow, Daniel G.",
volume="68",
number="9",
pages="630-631",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0028-3878",
doi="10.1212/01.wnl.0000257906.56206.31",
url="http://dx.doi.org/10.1212/01.wnl.0000257906.56206.31"
}