1. Department of Rheumatology; Lutfi Kirdar Kartal Education and Training Hospital; Ankara Turkey
2. Department of Neurology; Gazi University School of Medicine; Ankara Turkey
3. Department of Rheumatology; Gazi University School of Medicine; Ankara Turkey
4. Public Health Institution of Turkey; Gazi University School of Medicine; Ankara Turkey
5. Department of Immunology; Gazi University School of Medicine; Ankara Turkey