1. Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129
2. Division of Gastroenterology, Hepatology, and Nutrition, Boston Children’s Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA 02115
3. Momenta Pharmaceuticals, Cambridge, MA 02142