title: Using expired carbon monoxide levels to help smokers give up.
mesh_terms: D002248:Carbon Monoxide / Q000032:analysis*; D005260:Female; D006266:Health Education; D006801:Humans; D008297:Male; D009785:Occupational Health Nursing; D012119:Respiration; D000074606:Smoking Prevention
chemical_list: D002248:Carbon Monoxide