@article{ref1,
title="A comparison of twin and sibling studies for a developmental theory of schizophrenia",
journal="Acta geneticae medicae et gemellologiae",
year="1970",
author="Pollack, M. and Woerner, M. G. and Klein, D. F.",
volume="19",
number="1",
pages="303-304",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-5660",
doi="",
url="http://dx.doi.org/"
}