1. Dental Research Center, Oral & Maxillofacial Pathology Department, Dental Faculty, Hamadan University of Medical Sciences, Hamadan, Iran
2. Postgraduate Student of Oral & Maxillofacial Pathology, Oral & Maxillofacial Pathology Department, Dental Faculty, Hamadan University of Medical Sciences, Hamadan, Iran
3. Oral Medicine Department, Dental Faculty, Hamadan University of Medical Sciences, Hamadan, Iran