Smoking cessation services: coverage and utilization.
D000328:Adult; D017047:Cost Sharing; D003362:Cost-Benefit Analysis; D006801:Humans; D019458:Insurance Coverage / Q000191:economics / Q000706:statistics & numerical data*; D008329:Managed Care Programs / Q000191:economics* / Q000706:statistics & numerical data; D016540:Smoking Cessation / Q000191:economics*; D014481:United States