Keyphrases
Defect Study
100%
Birth Defects
100%
Pregnancy Exposure
100%
North Carolina
100%
National Birth Defects Prevention Study
21%
Exposure Protocol
10%
Early Pregnancy
10%
Epidemiology
10%
Structural Birth Defects
7%
Birth Defects Surveillance
7%
Public Health Impact
7%
Maternal Exposure
7%
Population-based
7%
Collaborative Research
7%
New Birth
7%
Medical Records
7%
Genetic Factors
7%
Medicine and Dentistry
Congenital Malformation
100%
Public Health
10%
Cohort Effect
10%
First Trimester Pregnancy
7%
Heredity
5%
Medical Record
5%
Maternal Exposure
5%
Nursing and Health Professions
Congenital Malformation
100%
Medical Record
5%
Maternal Exposure
5%