@article{ref1,
title="Focusing on the biological night: towards an epidemiological measure of circadian disruption",
journal="Occupational and environmental medicine",
year="2016",
author="Erren, T. C. and Groß, J. V. and Fritschi, L.",
volume="74",
number="3",
pages="159-160",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1351-0711",
doi="10.1136/oemed-2016-104056",
url="http://dx.doi.org/10.1136/oemed-2016-104056"
}