Oral cancer incidence among adults who smoke, have quit smoking, use smokeless tobacco, or former smokers that use smokeless tobacco observed from state-based cancer registries: Population-based study (Preprint)

Tobacco use has been identified as a risk factor for oral cancer worldwide. However, relative oral cancer incidence among adults who smoke cigarettes, use smokeless tobacco products (ST), have transitioned from cigarettes to ST, quit cigarettes and/or ST ("quitters"), or never used tobacco has not been well studied.