[Anemia after gastrointestinal surgery].
D000740:Anemia / Q000209:etiology*; D013505:Digestive System Surgical Procedures; D041981:Gastrointestinal Tract / Q000601:surgery*
ANEMIA/etiology and pathogenesis; GASTROINTESTINAL SYSTEM/surgery
Anämien nach Magen-Darm-Operationen.