@article{ref1,
title="Allergic reaction to snake venom after repeated bites of Vipera aspis",
journal="Clinical and experimental allergy",
year="1993",
author="Kopp, P. and Dahinden, C. A. and Müllner, G.",
volume="23",
number="3",
pages="231-232",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0954-7894",
doi="",
url="http://dx.doi.org/"
}