@article{ref1,
title="Complete left bundle branch block in asymptomatic airmen",
journal="Aerospace medicine",
year="1969",
author="Brake, C. M.",
volume="40",
number="7",
pages="781-782",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}