@article{ref1,
title="Mountain sickness: a cerebral form",
journal="Annals of internal medicine",
year="1964",
author="Fitch, R. F.",
volume="60",
number="",
pages="871-876",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-4819",
doi="",
url="http://dx.doi.org/"
}