Author information:
(1)Division of Rheumatology, Immunology, and Allergy, Brigham and Women's 
Hospital, Boston, MA 02115, USA; Department of Medicine, Harvard Medical School, 
Boston, MA 02115, USA. Electronic address: panderson@rics.bwh.harvard.edu.
(2)Division of Rheumatology, Immunology, and Allergy, Brigham and Women's 
Hospital, Boston, MA 02115, USA; Department of Medicine, Harvard Medical School, 
Boston, MA 02115, USA.
(3)Division of Rheumatology, Immunology, and Allergy, Brigham and Women's 
Hospital, Boston, MA 02115, USA; Department of Medicine, Harvard Medical School, 
Boston, MA 02115, USA. Electronic address: pivanov@rics.bwh.harvard.edu.