title: Letter: Smoking and health.
mesh_terms: D002248:Carbon Monoxide / Q000009:adverse effects; D006801:Humans; D009538:Nicotine / Q000008:administration & dosage; D000074606:Smoking Prevention; D013638:Tars / Q000009:adverse effects
chemical_list: D013638:Tars; D009538:Nicotine; D002248:Carbon Monoxide