1. University of Health Sciences, Faculty of Medicine Bakırköy Dr. Sadi Konuk Education and Training Hospital , Department of Rheumatology, Istanbul, Turkey.
2. University of Health Sciences, Faculty of Medicine Bakırköy Dr. Sadi Konuk Education and Training Hospital , Department of Rheumatology, Istanbul, Turkey.
3. Eskisehir Osmangazi University, Faculty of Medicine, Department of Biostatistics, Eskisehir, Turkey.
4. Marmara University Faculty of Medicine Department of Internal Medicine, Division of Rheumatology. Istanbul, Turkey.
5. Altinbas University Faculty of Medicine, Department of Internal Medicine, Division of Rheumatology, Bahcelievler Medicalpark Hospital, Istanbul, Turkey. mhmtsoy@gmail.com