| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Acute peptic ulcer of stomach | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer of stomach | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer of stomach | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Drug-induced peptic ulcer | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer of duodenum | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer with hemorrhage and perforation | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Gastroesophageal reflux disease with ulceration | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer of newborn | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer with hemorrhage | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Duodenal ulcer with hemorrhage, with perforation AND with obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer without hemorrhage AND without perforation but with obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer with perforation but without obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute gastric ulcer with hemorrhage AND with perforation but without obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Gastric ulcer with hemorrhage, with perforation and with obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute gastric ulcer with perforation | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Gastric ulcer with hemorrhage AND perforation but without obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer with hemorrhage but without obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Cushing ulcer | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer with hemorrhage, with perforation AND with obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer with hemorrhage, with perforation AND with obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer without hemorrhage, without perforation AND without obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer with perforation | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer with perforation but without obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer with perforation AND obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer without hemorrhage AND without perforation | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer without hemorrhage, without perforation AND without obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute duodenal ulcer with hemorrhage, with perforation AND with obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer with hemorrhage AND obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute gastric ulcer with perforation AND obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer without hemorrhage AND without perforation | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer with hemorrhage AND with perforation but without obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer with perforation AND obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer with hemorrhage but without obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute gastric ulcer with hemorrhage and perforation | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer with hemorrhage | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute gastric ulcer with hemorrhage, with perforation and with obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer without hemorrhage AND without perforation but with obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer without hemorrhage AND without perforation | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer with hemorrhage AND perforation | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer with hemorrhage AND with perforation but without obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer with hemorrhage AND obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer with perforation AND obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer without hemorrhage AND without perforation but with obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer without hemorrhage, without perforation AND without obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer of esophagus | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer with hemorrhage AND perforation | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Gastric ulcer with hemorrhage and perforation | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute duodenal ulcer with perforation AND obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer with hemorrhage | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer with hemorrhage AND obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Gastric ulcer with perforation AND obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Duodenal ulcer with perforation AND obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer with hemorrhage, with perforation AND with obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer with perforation | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer with perforation but without obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer with hemorrhage but without obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Gastric ulcer with perforation but without obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer with perforation | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer with hemorrhage AND with perforation but without obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute gastric ulcer with perforation but without obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Gastric ulcer with perforation | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer without mention of complication | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer with obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer without mention of complication | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer with obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer unspecified | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Acute peptic ulcer NOS | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer unspecified | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Chronic peptic ulcer NOS | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Unspecified peptic ulcer | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Unspecified peptic ulcer without mention of complication | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Unspecified peptic ulcer with hemorrhage | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Unspecified peptic ulcer with perforation | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Unspecified peptic ulcer with hemorrhage and perforation | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Unspecified peptic ulcer with obstruction | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Unspecified peptic ulcer with unspecified hemorrhage and/or perforation | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Unspecified peptic ulcer NOS | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer NOS | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Peptic ulcer - (PU) site unspecified | Causative agent | False | Gastric acid | Inferred relationship | Existential restriction modifier |  | 
| Maximal gastric acid output measurement | Component | True | Gastric acid | Inferred relationship | Existential restriction modifier | 1 | 
| Free gastric acid | Is a | False | Gastric acid | Inferred relationship | Existential restriction modifier |  |