Since 2010, the government has completely banned FDI in cigarette manufacturing
Social rules like these started as far back as 1999 before local governments introduced fines for various violations, such as smoking on sidewalks
Selection of study participants Potential subjects attended the study site and were informed about the study by a dentist, who performed an oral and dental examination, recorded their medical history and concomitant therapies, and determined eligibility according to the studys inclusion/exclusion criteria (Supplementary Table 1)
Because of this, electronic cigarettes can stain the teeth as well
Smoking-attributable medical expenditures by age, sex, and smoking status estimated using a relative risk approach
Even nicotine-free vape liquid can contain trace amounts of nicotine, sometimes exceeding legal limits