@article{ref1,
title="Multi-drug theophylline overdose",
journal="Journal of family practice",
year="1989",
author="Schwartz, M. P. and Taylor, A. T.",
volume="28",
number="5",
pages="575-577",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0094-3509",
doi="",
url="http://dx.doi.org/"
}