@article{ref1,
title="The aetiology of mental retardation",
journal="New Zealand medical journal",
year="1977",
author="Morrison, A. A.",
volume="85",
number="581",
pages="103-105",
abstract="The aetiological factors related to mental retardation are tabulated and discussed. The data comprise part of the findings of a large scale sociological survey of mental retardation and show that approximately 65% of subjects classified as &quot;mentally retarded&quot; have a specific diagnosis.<p /><p>Language: en</p>",
language="en",
issn="0028-8446",
doi="",
url="http://dx.doi.org/"
}