@article{ref1,
title="Crack abuse and asthma: a fatal combination",
journal="New York state journal of medicine",
year="1990",
author="Rao, A. N. and Polos, P. G. and Walther, F. A.",
volume="90",
number="10",
pages="511-512",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0028-7628",
doi="",
url="http://dx.doi.org/"
}