@article{ref1,
title="Does suicide cause suicide headache?",
journal="Headache",
year="2014",
author="Zanchin, Giorgio and Bellamio, Matteo and Maggioni, Ferdinando",
volume="54",
number="4",
pages="745-746",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0017-8748",
doi="10.1111/head.12321",
url="http://dx.doi.org/10.1111/head.12321"
}