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Dizygotic Twins
Monozygotic Twins
Twins
Veterans
Environment
Neuropsychological Tests
Vietnam Conflict
Registries
Magnetic Resonance Imaging
Longitudinal Studies
Risk Factors
Cognition
Phenotype
Genotype
Diseases in Twins
Cognition Disorders
Hydrocortisone
United States
Saliva
Genetics, Behavioral
Co-Publications
18
14
13
11
8
7
4
3
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