@article{ref1,
title="Problems caused by safety shoes, diabetes, standing upright",
journal="Phlébologie",
year="1989",
author="Acker, D.",
volume="42",
number="2",
pages="271-281",
abstract="<p>[Abstract unavailable]</p><p>Language: fr</p>",
language="fr",
issn="0031-8280",
doi="",
url="http://dx.doi.org/"
}