Influenza virus A+B Ag:PrThr:Pt:Bronchial:Ord
influenza virus a+b ag:prthr:pt:bronchial:ord
Influenza virus A+B Antigen:Presence or Threshold:To identify measures at a point in time:Bronchial:Ordinal
influenza virus a+b antigen:presence or threshold:to identify measures at a point in time:bronchial:ordinal