Establishment of "threshold" CO exposure levels.
D000397:Air Pollution / Q000032:analysis*; D002248:Carbon Monoxide / Q000032:analysis*; D018504:Ecological Systems, Closed; D004781:Environmental Exposure; D008452:Maximum Allowable Concentration; D008887:Military Medicine; D009787:Occupational Medicine; D013647:Task Performance and Analysis / Q000187:drug effects; D013997:Time Factors
D002248:Carbon Monoxide