cigarettes risk_factor_for discovery sample
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Evidence (1 sources)
A population-based twin study of the genetic and environmental relationship of major depression, regular tobacco use and nicotine dependence.
(2011)
PMID:20406522
cited
our measures of ND did not take into consideration the fact that many individuals use both cigarettes and snus, and could thus have higher levels of ND
confidence: 0.85