Carbon monoxide as an index of environmental tobacco smoke exposure.
D002248:Carbon Monoxide / Q000032:analysis*; D002263:Carboxyhemoglobin / Q000032:analysis; D006801:Humans; D009787:Occupational Medicine; D014677:Pharmaceutical Vehicles; D014028:Tobacco Smoke Pollution / Q000032:analysis*
D014677:Pharmaceutical Vehicles; D014028:Tobacco Smoke Pollution; D002248:Carbon Monoxide; D002263:Carboxyhemoglobin