1. University of PennsylvaniaPerelman School of Medicine Philadelphia
2. Veterans Affairs Nebraska–Western Iowa Health Care System and University of Nebraska Medical Center Omaha
3. Salt Lake City Veterans Affairs Medical Center and University of Utah Salt Lake City
4. University of Leeds and NIHR Leeds Biomedical Research Centre Leeds UK
5. Copenhagen Center for Arthritis Research, Rigshospitalet, Glostrup, and University of Copenhagen Copenhagen Denmark
6. Janssen Research and Development, LLC Horsham Pennsylvania
7. Washington DC Veterans Affairs Medical CenterGeorgetown University, and Howard University Washington DC
8. Veterans Affairs Portland Health Care System Portland Oregon
9. Philadelphia Veterans Affairs Medical Center and University of Pennsylvania Philadelphia