@article{ref1,
title="Tracheotomy 124 B.C. to 1960 A.D",
journal="Minnesota medicine",
year="1960",
author="Priest, R. E.",
volume="43",
number="",
pages="813-817",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0026-556X",
doi="",
url="http://dx.doi.org/"
}