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1 Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts. Electronic address: rsaff@mgh.harvard.edu.
2 Departments of Medicine and Pediatrics, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire; Section of Allergy and Immunology, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire.
1 Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts. Electronic address: rsaff@mgh.harvard.edu.
2 Departments of Medicine and Pediatrics, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire; Section of Allergy and Immunology, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire.