The author gratefully acknowledges the collaboration of Professor J. M. Brandes in the preventive intervention program for caesarean birth population and the collaboration of Y. A. Bar-Maor, J. Birkhan, and J. M. Hofman, and Dr. G. Shoshany in the preventive intervention program for pediatric surgery patients and their parents. The author wishes to thank the medical and nursing staff in the obstetric, pediatric surgery, and anesthetic departments, and the operating room, who were actively involved in the implementation of the preventive intervention programs. Last but not least, the author wishes to express her appreciation to Professor Gerald Caplan for his support and guidance throughout this work.