1 Division of Rheumatology, Inflammation, and Immunity, Department of Medicine Brigham and Women's Hospital, 60 Fenwood Road, #6016U, Boston, MA 02115, USA. Electronic address: [email protected].
2 Clinical Epidemiology Program, Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Rheumatology and Allergy Clinical Epidemiology Research Center, Mongan Institute, Massachusetts General Hospital, 100 Cambridge Street, 16th Floor, Boston, MA 02114, USA. Electronic address: [email protected].