@article{ref1,
title="Vitamin deficiency in the elderly. Its impact on health and its prevention",
journal="Bibliotheca Nutritio et Dieta",
year="1989",
author="Brubacher, G.",
volume="ePub",
number="44",
pages="60-75",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0067-8198",
doi="",
url="http://dx.doi.org/"
}