1. Department of Periodontology, School of Dentistry, Ege University, İzmir, Turkey.
2. Department of Endocrinology, Aydın Government Hospital, Aydın, Turkey.
3. Department of Oral and Maxillofacial Diseases, Institute of Dentistry, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
4. Department of Dental Medicine, Division of Periodontology, Karolinska Institute, Huddinge, Sweden.