title: Letter: The use of packed red blood cells.
mesh_terms: D001789:Blood Group Antigens; D001803:Blood Transfusion; D003365:Costs and Cost Analysis; D004912:Erythrocytes; D010952:Plasma Substitutes / Q000008:administration & dosage
chemical_list: D001789:Blood Group Antigens; D010952:Plasma Substitutes