@article{ref1,
title="Definition of acceptable levels for safety and potential problems",
journal="Biologicals: journal of the international Association of Biological Standardization",
year="1994",
author="Salmaso, S.",
volume="22",
number="4",
pages="407-408",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1045-1056",
doi="10.1006/biol.1994.1064",
url="http://dx.doi.org/10.1006/biol.1994.1064"
}