@article{ref1,
title="Athletics in heart damage",
journal="Deutsche Medizinische Wochenschrift",
year="1953",
author="Mellerowicz, H.",
volume="78",
number="19",
pages="707-710",
abstract="<p>[Abstract unavailable]</p><p>Language: un</p>",
language="un",
issn="0012-0472",
doi="",
url="http://dx.doi.org/"
}