@article{ref1,
title="The Iowa 500: familial and clinical findings favor two kinds of depressive illness",
journal="Comprehensive psychiatry",
year="1973",
author="Winokur, G. and Morrison, J. and Clancy, J. and Crowe, R.",
volume="14",
number="2",
pages="99-106",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0010-440X",
doi="",
url="http://dx.doi.org/"
}