1. Laboratory of Molecular Genetics and Immunology, The Rockefeller University, New York, NY 10021
2. Centre d'Immunologie de Marseille Luminy, CNRS-INSERM-Universite de la Mediterranee, 13288 Marseille, France
3. Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases/National Institutes of Health, Rockville, MD 20852
4. Department of Medical Biochemistry and Biophysics, Division of Matrix Biology, The Karolinska Institute, 17177 Stockholm, Sweden
5. Cellular Physiology and Immunology, The Rockefeller University, New York, NY 10021