1. Charlie Norwood Veterans Administration Medical Center, Augusta, Georgia, USA
2. Department of Medicine, Division of Rheumatology, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
3. Center of Innovation for Complex Chronic Healthcare (CINCCH), Health Services Research & Development, Department of Veterans Affairs, Hines VA Hospital, Hines, Illinois, USA
4. Department of Public Health Sciences, Stritch School of Medicine, Loyola University, Maywood, Illinois, USA
5. School of Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
6. Department of Medicine, Division of Geriatrics, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
7. Department of Medicine, Division of Physical Medicine and Rehabilitation, University of Toronto, Toronto, Ontario, Canada
8. Department of Orthopaedic Surgery, University of Kansas School of Medicine, Wichita, Kansas, USA