1. Department of Rheumatology Health Sciences University, Ankara Numune Training and Research Hospital Ankara Turkey
2. Department of Clinical Biochemistry Health Sciences University, Ankara Numune Training and Research Hospital Ankara Turkey
3. Division of Rheumatology, Department of Internal Medicine Atatürk Training and Research Hospital Ankara Turkey
4. Department of Medical Biochemistry University of Health Sciences, Gülhane School of Medicine Ankara Turkey