title: Letter: Blood carboxyhaemoglobin levels in smokers.
mesh_terms: D002248:Carbon Monoxide / Q000032:analysis*; D002263:Carboxyhemoglobin / Q000032:analysis; D006454:Hemoglobins / Q000032:analysis*; D006801:Humans; D009538:Nicotine / Q000097:blood; D012907:Smoking; D013997:Time Factors
chemical_list: D006454:Hemoglobins; D009538:Nicotine; D002248:Carbon Monoxide; D002263:Carboxyhemoglobin