الفهرس 
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Abstract
First of all I thank Allah the most gracious for helping me to accomplish this research and for providing me with such very encouraging and supportive supervisors.
I would like to express my deepest gratitude to Assistant Prof. Hanan Abbas , who suggested this topic. I appreciate his unforgettable support as well as his generous efforts in the evaluation of this work. It is honorable to be supervised by him.
I am greatly indebted and grateful to Dr. Enas Hamdy, for his fruitful suggestions, insistence on perfection together with the invaluable assistance he devoted in the supervision of this study.
I would like to express my deep appreciation to Prof. Abdullmajeed Mahmmod , I will never forget his valuable advice and support as well as his continuous encouragement and kind personality
I would like to thank all the staff members and personnel of the family medicine department of Qanat al-suiz University.
Very special thanks go to my beloved husband, for his continuous support and unlimited patience. I would like to thank him for putting up with my many bad moods and tempers during periods of stress. Importantly for my little children who enlighten my life.
Most importantly I would like to thank my parents they bore me, raised me, support me, taught me, and loved me until I became the person that I am now.
No thanks would ever do them right, especially my father who supported me emotionally and gave me the strength to get through the difficult times throughout my whole life.
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