@article{ref1,
title="Heat illness. I. Heat illness during the mecca pilgrimage",
journal="WHO chronicle",
year="1964",
author="Elhalawani, A. W.",
volume="18",
number="",
pages="283-288",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0042-9694",
doi="",
url="http://dx.doi.org/"
}