@article{ref1,
title="Exacerbation of recurrent depression as a result of treatment with varenicline. [letter]",
journal="American journal of psychiatry",
year="2008",
author="Popkin, M. K.",
volume="165",
number="6",
pages="774-774",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0002-953X",
doi="10.1176/appi.ajp.2008.07111735",
url="http://dx.doi.org/10.1176/appi.ajp.2008.07111735"
}