1. Department of Oral Pathology, Horus University in Egypt, New Damietta, Egypt
2. Department of Oral Pathology, Mansoura University, Mansoura, Egypt
3. Oral & Maxillofacial Pathology & Oral Microbiology, AB Shetty Memorial Institute of Dental Sciences, Nitte, Deralakatte, Mangaluru, India
4. Department of Pathology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran