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Infants
Dizygotic Twins
Twins
Monozygotic Twins
Peer Group
Longitudinal Studies
Risk Factors
Social Environment
Cohort Studies
Models, Psychological
Quebec
Canada
Aggression
Parenting
Questionnaires
Child Behavior
Genetic Predisposition to Disease
Hostility
Diseases in Twins
Motilin
Co-Publications
49
30
27
20
19
10
9
8
7
6
5
4
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