Although several carcinogens were already known at the time (for example, benzo[a]pyrene was isolated from coal tar and demonstrated to be a potent carcinogen in 1933), none were known to be contained in adequate quantities in tobacco smoke
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According to Bradford Hills criteria of temporality and biological gradient, the observed doseresponse and timing patterns strengthen the plausibility of a causal relationship [44]
But I think that someone in the U.S
As a result, the air sacs inside the lungs lose their ability to function correctly, thus exposing us to lung cancer, emphysema, and chronic obstructive pulmonary diseases
If trismus is linked to cancer, it usually means the disease is advanced