title: Answering patients' questions about transfusions.
mesh_terms: D001787:Blood Group Incompatibility / Q000209:etiology; D001803:Blood Transfusion; D001804:Blood Transfusion, Autologous; D006801:Humans; D012307:Risk Factors; D065227:Transfusion Reaction; D014777:Virus Diseases / Q000209:etiology