Moon for their encouragement and support. I am deeply indebted to my wife, and my daughters for their love, caring, and understanding. Without their love and support, this journey would have been much harder. I would like to express my sincere gratitude to my wife's parents, my brother-in-law, and my sister-in-law for their love, and support. I am eternally grateful to my parents, my brother, and my sister for being a constant source of encouragement and motivation throughout my life. vi

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