1. Rheumatic Diseases Unit, Ben-Gurion University and Soroka Medical Centre, Beer-Sheva, Israel
2. Outpatient Clinic of Clinical Rheumatology, Rambam Medical Centre, Technion, Haifa, Israel
3. Lupus Research Unit, The Rayne Institute, St. Thomas Hospital, London, UK
4. Instituto de la Nutricion Salvador Zubiran, Mexico City, Mexico
5. Department of Medicine 'B' and the Research Unit Of Autoimmune Diseases, Sheba Medical Centre and Sackler Faculty Of Medicine, Tel-Aviv, Israel