1. Department
of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota 55905, United States
2. Division of Pulmonary and Critical Care
Medicine, Mayo Clinic, Rochester, Minnesota 55905, United States
3. Rheumatology
Department, Brest University Hospital, 29609 Brest, Cedex, France
4. Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota 55905, United States
5. Genentech Inc., South San Francisco, California 94080, United States
6. Cleveland Clinic Foundation, Cleveland, Ohio 44195, United States
7. University of Groningen, 9712 CP Groningen, The Netherlands
8. University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
9. Boston University Medical Center, Boston, Massachusetts 02115, United States
10. Johns Hopkins University, Baltimore, Maryland 21218, United States
11. Hospital for Special Surgery, New York, New York 10021, United States
12. Duke University, Durham, North Carolina 27710, United States
13. Massachusetts General Hospital, Boston, Massachusetts 02114, United States