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Description
Further research is needed before scientists can say definitively that smoking marijuana does or does not cause lung cancer

Salmon, Emily & Salmon, John

J Public Health Policy
Here are some things you need to know in purchasing these tobacco products.

Ethnic differences in patterns of cigarette and e-cigarette use over time among adolescents

Although there were limited data available, the review did not find a decline in sperm concentration in non-Western countries
