@article{ref1,
title="Population studies on drug hypersensitivities",
journal="Acta allergologica",
year="1973",
author="Muranaka, M. and Okumura, H. and Takeda, K. and Koizumi, K. and Igarashi, H.",
volume="28",
number="1",
pages="50-61",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-5148",
doi="",
url="http://dx.doi.org/"
}