@article{ref1,
title="Morbidity in the population of 12 Chilean cities",
journal="Revista Medica de Chile",
year="1988",
author="Medina, E. and Kaempffer, A. M. and Martinez, L. and Cumsille, F.",
volume="116",
number="5",
pages="476-481",
abstract="<p>[Abstract unavailable]</p> <p>Language: es</p>",
language="es",
issn="0034-9887",
doi="",
url="http://dx.doi.org/"
}