1Department of Radiology, Saint Georges University, Grenada, Wisconsin, USA
2Sullivan's Island Imaging, Sullivan's Island, South Carolina, USA
3Division of Rheumatology, Allergy, & Immunology, Tufts Medical Center, Boston, Massachusetts, USA
4Norwich Medical School, University of East Anglia, Norwich, UK
5Department of Radiology, University of Cambridge, Cambridge, UK
6Division of Rheumatology, Immunology & Allergy, Brigham & Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
7Center for Primary Care and Prevention, Alpert Medical School of Brown University, Pawtucket, Rhode Island, USA
8Department of Medicine, Baylor College of Medicine, Medical Care Line and Research Care Line, Houston VA HSR&D Center for Innovations in Quality, Effectiveness and Safety, and Michael E. DeBakey Medical Center, Houston, Texas, USA
9Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
10Center for Translational Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania, USA
11Department of Kinesiology, Michigan State University, East Lansing, Michigan, USA