@article{ref1,
title="Differences between the background, attitude, functioning, and mood of drug addicts, alcoholics, and orthopedic patients",
journal="International journal of the addictions",
year="1973",
author="Greenwald, S. R. and Carter, J. S. and Stein, Elliott M.",
volume="8",
number="5",
pages="865-874",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0020-773X",
doi="",
url="http://dx.doi.org/"
}