Helicobacter pylori Ag:PrThr:Pt:Stool:Ord
helicobacter pylori ag:prthr:pt:stool:ord
Helicobacter pylori Antigen:Presence or Threshold:To identify measures at a point in time:Stool:Ordinal
helicobacter pylori antigen:presence or threshold:to identify measures at a point in time:stool:ordinal