Mulroy
Lippincott & Wilkins
Paperback
448
39569
This chart also graphically represents time periods of sensitivity for major and minor birth defects for the central nervous system and key organs and structures. At the bottom of the chart you will find a key message in regard to the importance of the mother's health to the baby's health, counseling expectant mothers to eat health foods, take folic acid, exercise wisely, and stay away from harmful substances.