This book is dedicated to the women of my life, to my mother, Sara, who died at the age of 82 in December 2008, who was the dearest angel of my young age and to my wife, Isabella, married for 20 years, who was my unique love and who has been patient and helpful in sustaining all my work and dedication. I wish the new generation of nephews, Diana, Federico, and Saverio, to continue our work following the same principles that have imprinted our lives. Special thanks to my dearest friend, Melvin, a man of special talent and humanity, sensible, and creative, who has made the greatest effort to realize this book.
Dr. Alberto Di Giuseppe