1. Section of Rheumatology, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut
2. St Mary's Hospital, Waterbury, Connecticut
3. Dia Sorim, Inc., Stillwater, Minnesota
4. Department of Radiology, Duke University Medical Center, Durham, North Carolina, USA
5. Section of Rheumatology, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut; St Mary's Hospital, Waterbury, Connecticut