@article{ref1,
title="Altitude diseases",
journal="New England journal of medicine",
year="1969",
author="Jokl, E.",
volume="280",
number="25",
pages="1420-1422",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-4793",
doi="10.1056/NEJM196906192802519",
url="http://dx.doi.org/10.1056/NEJM196906192802519"
}