[Hematemesis, melena and occult bleeding].
D006471:Gastrointestinal Hemorrhage; D041981:Gastrointestinal Tract; D006396:Hematemesis; D006470:Hemorrhage; D006801:Humans; D008551:Melena
GASTROINTESTINAL SYSTEM/hemorrhage; HEMATEMESIS
Haematemesis, Melaena und okkulte Blutung.