First and foremost, I thank God almighty for his support in all my endeavours; I profusely thank my parents, my daughter and my husband for their enormous support throughout the work. I also thank my brother and his wife for motivating me.
I am extremely thankful to Dr A. M. Swaminathan, I.A.S. (retired), chairman, Ethiraj College for Women, and all the trust board members of the college for their constant support. Words are inadequate to thank Dr Jothi Kumaravel, Principal, Ethiraj College for Women, for her perpetual support and motivation. I thank Dr Shymala Kanakarajan and Dr Kasthuri Jayaraman, Vice Principals, Ethiraj College for Women, for their support in all my endeavours.
I am extremely grateful to my beloved guide, Prof. K. Revathi, for all that she had been to me. I sincerely acknowledge the help and moral support offered by her in times of need. I immensely thank my beloved teacher, Prof. Niranjali Devaraj, who taught this beautiful subject to me. This book is my humble effort to voice her classes through my letters. I thank my mentors legendary Prof. Kannaiyan and Asia’ first women neurosurgeon Dr T. S. Kanaka for their blessings, constant support and encouragement.
I thank all my well-wishers for their motivation. I thank all my colleagues for their constant support and encouragement. I am extremely thankful to the Pearson team, especially Mrs. R. P. Mathivathani and Mr. M. Balakrishnan for their constant support towards the successful completion of the book.