1. Northwestern University Feinberg School of Medicine Chicago Illinois USA
2. Department of Medicine, Thurston Arthritis Research Center University of North Carolina Chapel Hill North Carolina USA
3. Department of Preventive Medicine Northwestern University Feinberg School of Medicine Chicago Illinois USA
4. Institute of Public Health and Medicine Northwestern University Feinberg School of Medicine Chicago Illinois USA
5. Department of Physical Medicine and Rehabilitation Northwestern University Feinberg School of Medicine Chicago Illinois USA
6. Department of Adult Health and Gerontological Nursing Rush University College of Nursing Chicago Illinois USA
7. Division of Rheumatology, Department of Medicine Northwestern University Feinberg School of Medicine Chicago Illinois USA