| http://www.w3.org/ns/prov#value | - Many other exposures have been established as causally associated with lung cancer, but even the combined effect of these additional factors is very small compared with cigarette smoking.[11] These additional causal factors are primarily related to occupational exposures to agents such as asbestos, arsenic, chromium, nickel, and radon.[11] Radon, a naturally occurring gas, is of relevance to the g
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