@article{ref1,
title="Stenosis of the esophagus caused by exogenous chemical aggression. Ii. Clinical studies",
journal="Anales. Universidad Nacional Mayor de San Marcos. Facultad de Medicina",
year="1964",
author="Ubilluzdhaga, R.",
volume="47",
number="",
pages="42-97",
abstract="<p>[Abstract unavailable]</p><p>Language: es</p>",
language="es",
issn="",
doi="",
url="http://dx.doi.org/"
}