Efficient use of blood: substitution within ABO and Rh groups, and unnecessary use of washed cells.
D000017:ABO Blood-Group System; D001803:Blood Transfusion; D002469:Cell Separation; D017707:Erythrocyte Transfusion; D006801:Humans; D012204:Rh-Hr Blood-Group System; D007507:Therapeutic Irrigation / Q000706:statistics & numerical data
D000017:ABO Blood-Group System; D012204:Rh-Hr Blood-Group System