<p>Professor of Otolaryngology, ENT Department, Faculty of Medicine, Alexandria University, EGYPT.</p> <p>Senior Consultant Otology, Neurotology, Skull Base Surgery.</p> <p>Past-President and founding member of the International Working Group on Endoscopic Ear Surgery (IWGEES)</p> <p>President of the Egyptian Society of Skull Base Surgery; Egypt (ESSBS)</p> <p>Member of the American Academy of Otolaryngology-Head and Neck Surgery (AAOHNS) - USA.</p> <p>Member of the French Society of Otorhinolaryngology; France.</p> <p>Member of the Association for Research in Otolaryngology (ARO), U.S.A.</p> <p>Member of the Prosper Meniere's Society; Colorado, U.S.A.</p> <p>Professor of Otolaryngology, ENT Department, Faculty of Medicine, Alexandria University, EGYPT.</p> <p>Senior Consultant Otology, Neurotology, Skull Base Surgery.</p> <p>Past-President and founding member of the International Working Group on Endoscopic Ear Surgery (IWGEES)</p> <p>President of the Egyptian Society of Skull Base Surgery; Egypt (ESSBS)</p> <p>Member of the American Academy of Otolaryngology-Head and Neck Surgery (AAOHNS) - USA.</p> <p>Member of the French Society of Otorhinolaryngology; France.</p> <p>Member of the Association for Research in Otolaryngology (ARO), U.S.A.</p> <p>Member of the Prosper Meniere's Society; Colorado, U.S.A</p>