@article{ref1,
title="Pipe smoking can be dangerous",
journal="AMA archives of otolaryngology",
year="1959",
author="Rock, E. H.",
volume="69",
number="6",
pages="720-722",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0096-6894",
doi="",
url="http://dx.doi.org/"
}