for the coffee breaks and the after-work chats. To my family, Simone you were my additional motive. Your help and support in my last year have been priceless. Thank you, Magdy, my dear father and brother, for your love and support. Finally, to my mother, you are the first person I think of whenever I want to share something. I still talk to you, and you still listen. Mother, although you have departed from this world, in my heart you always live.
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