1. Istituto di Medicina Interna, Malattie Infettive and Immunopatologia, University of Milan, Italy
2. Lupus Research Unit, The Rayne Institute, St. Thomas' Hospital, London, UK
3. Laboratory of Immunology, Brest University Medical School, Brest, France
4. Research Unit of Autoimmune Diseases, Sheba Medical Center and Tel-Aviv University, Israel