title: Decline in teen smoking levels off.
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000208:ethnology; D001741:Black or African American; D006801:Humans; D012907:Smoking / Q000453:epidemiology* / Q000208:ethnology; D014481:United States / Q000453:epidemiology; D044465:White People