title: Carbon monoxide in air and breath of employees in an underground office.
mesh_terms: D000395:Air Pollutants, Occupational / Q000032:analysis*; D001944:Breath Tests; D002248:Carbon Monoxide / Q000032:analysis*; D006801:Humans
chemical_list: D000395:Air Pollutants, Occupational; D002248:Carbon Monoxide