Document Type : Original articles
Authors
1 Demonstrator of Oral and Maxillofacial Pathology, Faculty of Dentistry, Assiut University, Egypt.
2 Associate Professor of Oral and Maxillofacial Pathology, Faculty of Dentistry, Minia University, Egypt.
3 Former Head of Research and Development Sector of The Egyptian Holding Company of Vaccines, Sera and Drug (Egy-Vac, VACSERA-Egypt).
4 Lecturer of Oral and Maxillofacial Pathology, Faculty of Dentistry, Minia University, Egypt.
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