Assertion: hemolytic transfusion reaction | /r/CreatedBy | pregnancy
Facets:
value: almost invariably
type: DEGREE
value: unlike acute hemolytic transfusion reactions
type: OTHER
Source sentences:
text: Unlike acute hemolytic transfusion reactions, delayed hemolytic transfusion reactions are almost invariably caused by secondary (anamnestic) immune responses in patients immunized by previous transfusions, allogeneic stem-cell transplants, or pregnancy.