Correction to: Clinical Rheumatology

https://doi.org/10.1007/s10067-018-4245-5

The original version of this article, unfortunately, contained an error.

In the original version of this article the first name of the co-author was incorrectly spelled as “Khaled A. Alnaqbi”. The correct spelling should have been “Khalid A. Alnaqbi”. This is now presented correctly in this article.

The original article has been corrected.