1. Department of Periodontics Kashan Dental School, Kashan University of Medical Sciences Kashan Iran
2. Henry M. Goldman School of Dental Medicine Boston University Boston Massachusetts USA
3. Oral and Dental Diseases Research Center and Department of Periodontics Kerman Dental School, Kerman University of Medical Sciences Kerman Iran
4. Department of Oral and Maxillofacial Pathology, and Oral and Dental Diseases Research Center Kerman Dental School, Kerman University of Medical Sciences Kerman Iran
5. Mental Health Research Center Psychosocial Health Research Institute, Iran University of Medical Sciences Tehran Iran