@article{ref1,
title="Deficiency in the opioid hypotheses of self-injurious behavior",
journal="American journal on mental retardation",
year="1991",
author="King, Bryan H. and McCracken, James T. and Poland, Russell E.",
volume="95",
number="6",
pages="692-694",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0895-8017",
doi="",
url="http://dx.doi.org/"
}