1. Department of Internal Medicine, Division of Rheumatology, School of Medicine, Kocaeli University, Kocaeli, Turkey
2. Department of Internal Medicine, Division of Rheumatology, School of Medicine, Marmara University, Istanbul, Turkey
3. Department of Internal Medicine, Division of Rheumatology, School of Medicine, Ege University, Izmir, Turkey
4. Department of Internal Medicine, Division of Rheumatology, School of Medicine, Koç University, Istanbul, Turkey
5. Department of Internal Medicine, Division of Rheumatology, School of Medicine, Katip Celebi University, Izmir, Turkey
6. Department of Internal Medicine, Division of Rheumatology, Ankara City Hospital, Ankara, Turkey
7. Department of Internal Medicine, Division of Rheumatology, School of Medicine, Dokuz Eylul University, Izmir, Turkey
8. Department of Internal Medicine, Division of Rheumatology, School of Medicine, Trakya University, Edirne, Turkey
9. Department of Internal Medicine, Division of Rheumatology, School of Medicine, Osmangazi University, Eskisehir, Turkey