TY - GEN AU - Lehr,L AU - Schuhmacher,C AU - Siewert,J R TI - [Blood saving operations in abdominal surgery] SN - 0341-5023 PY - 1993///0217 KW - Abdomen KW - surgery KW - Blood Component Transfusion KW - Germany KW - epidemiology KW - Humans KW - Retrospective Studies N1 - Publication Type: Journal Article ER -