1. Oral and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
2. Department of Periodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
3. Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
4. Private Practice, Shiraz, Iran
5. Department of Prosthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran