1,4-Dioxane:PrThr:Pt:Ser/Plas:Ord
1,4-dioxane:prthr:pt:ser/plas:ord
1,4-Dioxane:Presence or Threshold:To identify measures at a point in time:Serum/Plasma:Ordinal
1,4-dioxane:presence or threshold:to identify measures at a point in time:serum/plasma:ordinal