@article{ref1,
title="When does one have to expect absenteeism in adolescents and young people?",
journal="Medizinische Monatsschrift",
year="1966",
author="Schwarz, H. G.",
volume="20",
number="6",
pages="256-263",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0025-8474",
doi="",
url="http://dx.doi.org/"
}