[1] University of Alexandria,Department of Otorhinolaryngology, Unit of Phoniatrics, Faculty of Medicine
[2] University of Alexandria,Department of Otorhinolaryngology, Unit of Phoniatrics, Faculty of Medicine
[3] Rawag Systems Company,Department of Otorhinolaryngology, Unit of Phoniatrics, Faculty of Medicine
[4] University of Alexandria,Department of Neuropsychiatry, Faculty of Medicine
[5] University of Alexandria,undefined