Smoking in Oklahoma: the 7-year trend.
D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009825:Oklahoma / Q000453:epidemiology; D011159:Population Surveillance; D015995:Prevalence; D015397:Program Evaluation; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology*; D000074606:Smoking Prevention