1. Department of Cancer Immunology and AIDS, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
2. Center for Cellular and Molecular Medicine, Kyushu University Hospital, Fukuoka 812-8582, Japan
3. Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02115
4. Division of Rheumatology, Allergy and Immunology, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115
5. Division of Immunology, Department of Microbiology and Immunology, The Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan