@article{ref1,
title="Epidemiology: warning signs of suicide risk",
journal="Nature human behaviour",
year="2017",
author="Carson, J.",
volume="1",
number="6",
pages="-",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="2397-3374",
doi="10.1038/s41562-017-0123",
url="http://dx.doi.org/10.1038/s41562-017-0123"
}