@article{ref1,
title="Shift work: living against biological rhythm",
journal="Pflege Zeitschrift",
year="2003",
author="Hammer, Alexandra",
volume="56",
number="2",
pages="132-132",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0945-1129",
doi="",
url="http://dx.doi.org/"
}