Flow diagram showing patient selection at baseline.

<p>Flow diagram showing patient selection at baseline.</p

The association of patient and disease factors with ISBS^*.

<p>The association of patient and disease factors with ISBS^{<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0149781#t002fn001" target="_blank">*</a>}.</p

Etanercept and adalimumab patient characteristics at the time of the baseline survey^*.

<p>Etanercept and adalimumab patient characteristics at the time of the baseline survey^{<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0149781#t001fn001" target="_blank">*</a>}.</p