@article{ref1,
title="Samuel Johnson's alcohol problem",
journal="Medical history",
year="1967",
author="Madden, J. S.",
volume="11",
number="2",
pages="141-149",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0025-7273",
doi="",
url="http://dx.doi.org/"
}