@article{ref1,
title="Analysis of work disability-morbidity in apprentices from various types of enterprises",
journal="Arztliche Jugendkunde",
year="1976",
author="Petermann, A. and Jalant, W. and Eichhorn, C.",
volume="67",
number="4",
pages="280-286",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0001-9518",
doi="",
url="http://dx.doi.org/"
}