@article{ref1,
title="Sudden death while playing football -- cardiac commotion in certain conditions of the heart",
journal="Lebensversicherungs Medizin",
year="1968",
author="Walther, G.",
volume="20",
number="6",
pages="136-140",
abstract="<p>[Abstract unavailable]  Keywords: Soccer</p> <p>Language: de</p>",
language="de",
issn="0024-0044",
doi="",
url="http://dx.doi.org/"
}