@article{ref1,
title="Acute mountain sickness",
journal="New England journal of medicine",
year="1969",
author="Singh, I. and Khanna, P. K. and Srivastava, M. C. and Lal, M. and Roy, S. B. and Subramanyam, C. S.",
volume="280",
number="4",
pages="175-184",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-4793",
doi="",
url="http://dx.doi.org/"
}