@article{ref1,
title="The excessive mortality of the male sex",
journal="Medizinische Klinik [Urban und Schwarzenberg]",
year="1981",
author="Zimmermann, E.",
volume="76",
number="26",
pages="729-733",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0025-8458",
doi="",
url="http://dx.doi.org/"
}