1. Royal National Hospital for Rheumatic Diseases (at Royal United Hospitals), and University of Bath; Bath UK
2. University of Pittsburgh Medical Center; Pittsburgh Pennsylvania
3. Tulane University School of Medicine; New Orleans Louisiana
4. University of the West of England; Bristol UK
5. Royal National Hospital for Rheumatic Diseases (at Royal United Hospitals); Bath UK
6. University of Utah and Salt Lake Regional Veterans Affairs Medical Center; Salt Lake City
7. University of Milano; Milano Italy
8. University of Manchester, Salford Royal Hospital NHS Foundation Trust, and Manchester Academic Health Science Centre; Manchester UK
9. University of Florence; Florence Italy
10. University of Michigan; Ann Arbor