1. Assistant Professor of Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran
2. Dental Researcher Center, Department of Periodontics, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran
3. Department of Biostatistics, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran
4. Resident of Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran