title: Confirmation of abstinence from smoking.
mesh_terms: D000397:Air Pollution; D002263:Carboxyhemoglobin / Q000032:analysis*; D006454:Hemoglobins / Q000032:analysis*; D006801:Humans; D000074606:Smoking Prevention
chemical_list: D006454:Hemoglobins; D002263:Carboxyhemoglobin