@article{ref1,
title="Parkinson's syndrome: aetiological factors and certain clinical features",
journal="Australian and New Zealand journal of medicine",
year="1971",
author="Sutherland, J. M.",
volume="1",
number="",
pages="Suppl 1:29-34",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0004-8291",
doi="",
url="http://dx.doi.org/"
}