Correction: What magnetic resonance imaging has told us about the pathogenesis of rheumatoid arthritis – the first 50 years

After publication of our recent article [1], we noticed an error in the legend of figure 2:

"The marrow soft tissues have an increased water content due to the osteitis that is seen as a high signal on fat suppression MRI (grey squares), as shown in (b)."

This sentence should refer to panel (b) in figure 1. The correct sentence is:

The marrow soft tissues have an increased water content due to the osteitis that is seen as a high signal on fat suppression MRI (grey squares), as shown in figure 1(b).

See related review by McGonagle and Tan, http://arthritis-research.com/content/10/5/222