@article{ref1,
title="Methadone dosage, cocaine and opiate abuse",
journal="American journal of psychiatry",
year="1993",
author="Grabowski, J. and Rhoades, H. and Elk, R. and Schmitz, J. and Creson, D.",
volume="150",
number="4",
pages="675-675",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0002-953X",
doi="",
url="http://dx.doi.org/"
}