1. Istituto di Medicina Interna, Malattie Infettive & Immunopatologia, University of Milan, Milan, Italy
2. Department of Rheumatology, St Bartholomew’s Hospital
3. Lupus Research Unit, The Rayne Institute, St Thomas’ Hospital, London, UK
4. Laboratoire d’Immunologie, Centre Hospitalier Regional et Universitaire, Brest, France