Demographic and clinical characteristics of HIV-positive smokers<sup>a</sup> in Russia according to smoking status.

<p>Demographic and clinical characteristics of HIV-positive smokers<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0189207#t001fn001" target="_blank"><sup>a</sup></a> in Russia according to smoking status.</p>