@article{ref1,
title="Crack cocaine and HIV in the inner city",
journal="New England journal of medicine",
year="1995",
author="Sugarman, K. and Herman, M.",
volume="332",
number="18",
pages="1233; author reply 1234-5",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-4793",
doi="",
url="http://dx.doi.org/"
}