Carbon monoxide/gas.total^at end expiration^corrected for ambient CO:VFr:Pt:Exhl gas:Qn
carbon monoxide/gas.total^at end expiration^corrected for ambient co:vfr:pt:exhl gas:qn
Carbon monoxide/Gas total corrected for ambient CO Exhaled gas --at end expiration
carbon monoxide/gas total corrected for ambient co exhaled gas --at end expiration