@article{ref1,
title="Manganese poisoning in the mines of Cuba",
journal="Industrial medicine and surgery",
year="1953",
author="Garcia avila, M. and Penalver ballina, R.",
volume="22",
number="5",
pages="220-221",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0019-8536",
doi="",
url="http://dx.doi.org/"
}