Dextromethorphan+Levomethorphan:PrThr:Pt:TissCo:Ord:Confirm
dextromethorphan+levomethorphan:prthr:pt:tissco:ord:confirm
Dextromethorphan+Levomethorphan:Presence or Threshold:To identify measures at a point in time:Cord Tissue:Ordinal:Confirm
dextromethorphan+levomethorphan:presence or threshold:to identify measures at a point in time:cord tissue:ordinal:confirm