@article{ref1,
title="La viudez como factor de riesgo de suicidio",
journal="Revista panamericana de salud publica",
year="2002",
author="Anon, ",
volume="12",
number="4",
pages="275-276",
abstract="<p>[Abstract unavailable]</p><p>Language: es</p>",
language="es",
issn="1020-4989",
doi="",
url="http://dx.doi.org/"
}