High risk factors of blood transfusion for severe anemia in children.
D000740:Anemia / Q000209:etiology / Q000628:therapy*; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009748:Nutrition Disorders / Q000150:complications; D012306:Risk; D065227:Transfusion Reaction