@article{ref1,
title="Contribution to the "XYY syndrome"",
journal="Kinderarztliche praxis",
year="1969",
author="Zernahle, K. and Polster, H.",
volume="37",
number="7",
pages="324-334",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0023-1495",
doi="",
url="http://dx.doi.org/"
}