HIV 1 Ab:PrThr:Pt:Ser^Donor:Ord
hiv 1 ab:prthr:pt:ser^donor:ord
Human immunodeficiency virus 1 Antibody:Presence or Threshold:To identify measures at a point in time:Serum^Donor:Ordinal
human immunodeficiency virus 1 antibody:presence or threshold:to identify measures at a point in time:serum^donor:ordinal