Meperidine:PrThr:Pt:TissCo:Ord:Screen
meperidine:prthr:pt:tissco:ord:screen
Meperidine:Presence or Threshold:To identify measures at a point in time:Cord Tissue:Ordinal:Screen
meperidine:presence or threshold:to identify measures at a point in time:cord tissue:ordinal:screen