1. School of Medicine, West Virginia University, Morgantown, WV, USA
2. Arthritis Foundation, Atlanta, GA, USA
3. Northwestern University Feinberg School of Medicine, Chicago, IL, USA
4. Acute Care Rehabilitation, Hospital for Special Surgery, New York, NY, USA
5. Department of Physical Therapy, Boston University, Boston, MA, USA
6. Department of Physiatry, Hospital for Special Surgery, New York, NY, USA
7. Orthopedic Surgery, Hospital for Special Surgery, New York, NY, USA