. 2012 Dec 19;2012:137635. doi: 10.1155/2012/137635
Copyright © 2012 Rafael Chaparro del Moral et al.
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 2.
RA disease activity and work impairment.