@article{ref1,
title="Epidemiology of Mental Subnormality",
journal="Mental health",
year="1964",
author="Leeson, Joyce",
volume="23",
number="3",
pages="93-96",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0025-9632",
doi="",
url="http://dx.doi.org/"
}