title: Heme-positive nasogastric aspirates in infants.
mesh_terms: D002675:Child, Preschool; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis; D006418:Heme / Q000032:analysis*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007441:Intubation, Gastrointestinal
chemical_list: D006418:Heme