@article{ref1,
title="The natural history of the affective disorders (manias and depressions)",
journal="Seminars in psychiatry",
year="1970",
author="Winokur, G.",
volume="2",
number="4",
pages="451-463",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0037-1971",
doi="",
url="http://dx.doi.org/"
}