Document Type : Original Article
Authors
1 Assistant lecturer, Maxillofacial and Plastic Surgery Department, Faculty of Dentistry, Alexandria University, Egypt
2 Assistant Professor of Maxillofacial and Plasric Surgery, Maxillofacial and Plastic Surgery Department, Faculty of Dentistry, Alexandria University, Egypt
3 Professor of Phoniatrics, Otorhinolaryngology Department, Faculty of Medicine, Alexandria University, Egypt
4 Lecturer of Maxillofacial and Plastic Surgery, Maxillofacial and Plastic Surgery Department, Faculty of Dentistry, Alexandria University, Egypt
Abstract
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