@article{ref1,
title="Qualitative and quantitative aspects of sports and high risk patients",
journal="Verhandlungen der Deutschen Gesellschaft für Innere Medizin",
year="1989",
author="Hollmann, W. and Rost, R.",
volume="95",
number="",
pages="642-647",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0070-4067",
doi="",
url="http://dx.doi.org/"
}