@article{ref1,
title="Drug allergy in rheumatology",
journal="Rheumatology and physical medicine",
year="1972",
author="Littlejohns, D. W.",
volume="11",
number="8",
pages="435-436",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-4908",
doi="",
url="http://dx.doi.org/"
}