1. Department of Periodontology; Faculty of Dentistry; Ankara University; Ankara Turkey
2. Department of Periodontology; Faculty of Dentistry; Süleyman Demirel University; Isparta Turkey
3. Department of Medical Biochemistry; School of Medicine; Acıbadem University; Ankara Turkey
4. Department of Physical Medicine and Rehabilitation; Ankara Numune Training and Research Hospital; Ankara Turkey
5. Division of Periodontology; College of Dentistry; The Ohio State University; Columbus OH USA