الفهرس | Only 14 pages are availabe for public view |
Abstract ACKNOWLEDGEMENT I would like to express may deep gratitude to professor Dr. Mamdouh El Gouhary, Professor of Oto-Rhino-Laryngol. ogy, Aln-Shams University, tor l1is kind guidance, construetivc cri.ticisn1, and continous enco11ragement during the preparation of this study, with much patience and enthusiasm. All tl1is study was carried under his continous supervision and participation . 1 am definitely indebated to him more than I can expr(•ss. would also like to 0xpress mc~y deepest CJratiludc to assisstant professor Dr. Mohame<l Khalil, assisstant profebsor of nto-Rhino-Lurynyology, Ain-Shams unive>r.sity, for his guidance, continous help, and great stlpport . Last, but not least, I would like to express may ’ deepest gratitude and thanks to all may professors, teachers and colleagues without their aid, I would have been unable to undertake this work . |