@article{ref1,
title="On the relation of untreated and medically managed injuries in school gymnastics",
journal="Hippokrates: Zeitschrift fur praktische Heilkunde",
year="1967",
author="Braun, R. N.",
volume="38",
number="11",
pages="420-423",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0018-2001",
doi="",
url="http://dx.doi.org/"
}