Acetylcholinesterase:PrThr:Pt:Amnio fld:Ord
acetylcholinesterase:prthr:pt:amnio fld:ord
Acetylcholinesterase:Presence or Threshold:To identify measures at a point in time:Amniotic fluid:Ordinal
acetylcholinesterase:presence or threshold:to identify measures at a point in time:amniotic fluid:ordinal