Keyphrases
Latency
100%
Twin Study
100%
Smoking Onset
100%
First Use
100%
Frequent Use
100%
Drinking Onset
100%
Tobacco Use
75%
Tobacco
75%
Age of First Use
75%
Alcohol
50%
Usage Patterns
50%
Onset of Alcohol Use
50%
MZ Twins
50%
Older Adults
25%
Age of Onset
25%
Early Onset
25%
Alcohol Use
25%
Environmental Factors
25%
Genetic Influences
25%
Genetic Factors
25%
Substance Dependence
25%
Model Fitting
25%
Environmental Influence
25%
Family Resemblance
25%
Substance Use
25%
Substance Abuse Problems
25%
Age at First Alcohol Use
25%
Alcohol Intoxication
25%
Dependency Problem
25%
Same-sex Twins
25%
Regular Patterns
25%
Biochemistry, Genetics and Molecular Biology
Tobacco Use
100%
Twin Study
100%
Genetics
33%
Genetic Determinism
33%