@article{ref1,
title="Medico-demographic consideration",
journal="Prensa Médica Argentina",
year="1966",
author="Melgar, R.",
volume="53",
number="9",
pages="1224-1231",
abstract="<p>[Abstract unavailable]</p><p>Language: es</p>",
language="es",
issn="0032-745X",
doi="",
url="http://dx.doi.org/"
}