title: From the Centers for Disease Control and Prevention. Preliminary data: exposure of persons aged > or = 4 years to tobacco smoke--United States.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D003367:Cotinine / Q000097:blood; D006801:Humans; D008875:Middle Aged; D011159:Population Surveillance; D014028:Tobacco Smoke Pollution / Q000032:analysis*
chemical_list: D014028:Tobacco Smoke Pollution; D003367:Cotinine