1 Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Boston, Mass; Rheumatology & Allergy Clinical Epidemiology Research Center, The Mongan Institute, Massachusetts General Hospital, Boston, Mass.
2 Harvard Medical School, Boston, Mass; Division of General Internal Medicine and Primary Care, Department of Medicine, Brigham and Women's Hospital, Boston, Mass.
3 Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tenn; Center for Drug Safety and Immunology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tenn.
4 Division of General Internal Medicine and Primary Care, Department of Medicine, Brigham and Women's Hospital, Boston, Mass.
5 Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Boston, Mass.
6 Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Boston, Mass; Harvard Medical School, Boston, Mass.
7 Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Boston, Mass; Rheumatology & Allergy Clinical Epidemiology Research Center, The Mongan Institute, Massachusetts General Hospital, Boston, Mass; Harvard Medical School, Boston, Mass.
8 Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Boston, Mass; Rheumatology & Allergy Clinical Epidemiology Research Center, The Mongan Institute, Massachusetts General Hospital, Boston, Mass; Harvard Medical School, Boston, Mass. Electronic address: kblumenthal@mgh.harvard.edu.