1. Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico DF, Mexico,
2. Department of Internal Medicine, Hôpital Pitié-Salpêtrière, Paris, France
3. Department of Obstetrics and Gynecology, University of Utah Health Science Center, Salt Lake City, Utah, USA
4. Department of Autoirmmune Diseases, Institut Clínic d’Infeccions i Immunologia, Hospital Clínic, Barcelona, Catalonia, Spain
5. Morehouse School of Medicine, Atlanta, Georgia, USA
6. Lupus Research Unit, Rayne Institute, St Thomas’ Hospital, London, UK
7. Research Center for Autoimmune Diseases, Intern. Med. ‘B’, Sheba Medical Center, Tel-Hashomer, Israel
8. Department of Medicine, Section of Rheumatology, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA
9. Division of Rheumatology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA