01. Lainz Hospital, Viena, Austria
02. Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Bruxelles, Belgium
03. Hôpital Erasme, Université Libre de Bruxelles, Bruxelles, Belgium
04. Centre Hospitalier Universitaire du Sart-Tilman, Université de Liège, Liège, Belgium
05. Centre Hospitalier Universitaire Pitié-Salpétrière, Université de Paris VI, Paris, France
06. Evangelismos Hospital, Athens, Greece
07. Chaim Sheba Medical Center, Tel-Aviv University, Tel-Hashomer, Israel
08. Soroka Medical Center, Ben Gurion University, Beer-Sheva, Israel
09. Rambam Medical Center, Technion University, Haifa, Israel
10. Istituto di Reumatologia Le Scotte, Università degli Studi di Siena, Siena, Italy
11. Istituto di Clinica Medica, Università di Cagliari, Cagliari, Italy
12. Ospedale Regionale, Università degli Studi di Ancona, Ancona, Italy
13. Ospedale Civile, Università degli Studi di Brescia, Brescia, Italy
14. Ospedale Policlinico, Università degli Studi di Milano, Milano, Italy
15. Ospedale San Carlo Borromeo, Milano, Italy
16. Haukeland Hospital, University of Bergen, Bergen, Norway
17. Hospital de Santa Maria, Lisboa, Portugal
18. Hospital de Santo Antonio, Instituto Biomedical Abel Salazar, Porto, Portugal
19. Hospital Clinic, Universitat de Barcelona, Barcelona, Spain
20. Hospital de Cruces, Universitat des Pais Vasco, Vizcaya, Spain
21. Hospital Regional del Servicio Andaluz de Salud, Malaga, Spain
22. Hospital Universitario de Malaga, Universitat de Malaga, Malaga, Spain
23. Hospital Universitario La Fe, Universitat de Valencia, Valencia, Spain
24. Hospital de Bellvitge Princeps d'Espanya, Barcelona, Spain
25. Hospital Universitario de Valme, Sevilla, Spain
26. University of Marmara Hospital, University of Marmara, Istanbul, Turkey
27. Ibn'i Sina Hospital, University of Ankara, Ankara, Turkey
28. Lupus Research Unit, University of Istanbul, Istanbul, Turkey
29. St. Bartholomew's Hospital, University of London, London, United Kingdom
30. Military Medical Academy, University of Belgrade, Belgrade, Yougoslavia