1. University of Süleyman Demirel, Faculty of Dentistry, Department of Periodontology, Isparta, Turkey.
2. University of Hacettepe, Faculty of Dentistry, Department of Periodontology, Ankara, Turkey.
3. University of Süleyman Demirel, Faculty of Medicine, Department of Rheumatology, Isparta, Turkey.
4. University of Başkent, Faculty of Dentistry, Department of Periodontology, Ankara, Turkey.