Hemoglobin.gastrointestinal:PrThr:Pt:Sputum/Gast fld:Ord
hemoglobin.gastrointestinal:prthr:pt:sputum/gast fld:ord
Hemoglobin.gastrointestinal [Presence] in Sputum or Gastric fluid
hemoglobin.gastrointestinal [presence] in sputum or gastric fluid