1. Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia, USA
2. Department of Medicine, Division of Rheumatology, Medical College of Georgia, Augusta University, Augusta, Georgia, USA
3. Harvard Medical School, Boston, Massachusetts, USA
4. Spaulding Rehabilitation Hospital, Physical Medicine and Rehabilitation, Charlestown, Massachusetts, USA
5. VA Boston Healthcare system, West Roxbury, Boston, Massachusetts, USA
6. Center of Innovation for Complex Chronic Healthcare (CINCCH), Health Services Research & Development, Department of Veterans Affairs, Hines VA Hospital, Hines, Illinois, USA
7. Department of Public Health Sciences, Stritch School of Medicine, Loyola University, Maywood, Illinois, USA
8. Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
9. Department of Biostatistics, University of Illinois, Chicago, Illinois, USA
10. Department of Mathematics, Northeastern Illinois University, Chicago, Illinois, USA
11. Division of Orthopaedic Trauma, Vanderbilt Orthopaedic Institute, Vanderbilt University Medical Center, Nashville, Tennessee, USA
12. Department of Medicine, J. Harold Harrison M.D. Distinguished Chair in Rheumatology, Medical College of Georgia, Augusta University, Augusta, Georgia, USA