@article{ref1,
title="Speculations on the etiology of Parkinson's disease",
journal="Advances in Neurology",
year="1984",
author="Calne, D. B. and Duvoisin, R. C. and McGeer, E.",
volume="40",
number="",
pages="353-360",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0091-3952",
doi="",
url="http://dx.doi.org/"
}