title: Lung cancer and the 'safer' cigarette.
mesh_terms: D000328:Adult; D000367:Age Factors; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000401:mortality*; D008297:Male; D008875:Middle Aged; D012306:Risk; D012907:Smoking; D013638:Tars
chemical_list: D013638:Tars