1. Kocaeli Turkey
2. Faculty of Physical Therapy and Rehabilitation Hacettepe University Ankara Turkey
3. Division of Rheumatology Department of Internal Medicine Faculty of Medicine Kocaeli University Hospital Kocaeli Turkey
4. Department of Physiotherapy and Rehabilitation Faculty of Health Sciences Eastern Mediterranean University Famagusta Turkey
5. Department of Biostatistics Faculty of Medicine Hacettepe University Ankara Turkey