@article{ref1,
title="Toxins which produce pain",
journal="Pain",
year="1975",
author="Chahl, Loris A. and Kirk, E.J.",
volume="1",
number="1",
pages="3-49",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0304-3959",
doi="10.1016/0304-3959(75)90003-2",
url="http://dx.doi.org/10.1016/0304-3959(75)90003-2"
}