@article{ref1,
title="The course of manic-depressive psychosis. A follow up investigation of 215 patients",
journal="Acta psychiatrica Scandinavica",
year="1968",
author="Bratfos, O. and Haug, J. O.",
volume="44",
number="1",
pages="89-112",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-690X",
doi="",
url="http://dx.doi.org/"
}