Acute on chronic G.I. haemorrhage | Bleeding gastrointestinal | Gastro intestinal bleed | Gastro intestinal bleeding | Gastro-intestinal tract bleed | Gastrointestinal bleed | Gastrointestinal bleeding | Gastrointestinal haemorrhage | Gastrointestinal haemorrhage NOS | Gastrointestinal hemorrhage | Gastrointestinal tract bleed (NOS) | Gastrointestinal tract bleed NOS | GI bleed | GI haemorrhage | GI hemorrhage | GI tract bleed | Haemorrhage of digestive tract | Haemorrhage of gastrointestinal tract, unspecified | Hemorrhage gastrointestinal | Hemorrhage of gastrointestinal tract, unspecified | Hemorrhage of digestive tract | Haemorrhage gastrointestinal | Gastrointestinal Hemorrhage | Hemorrhage, Gastrointestinal | Gastrointestinal Hemorrhages | Hematochezia | Hematochezias |