| Abbreviations | Meaning |
 | GCLO | Gastric Campylobacter-like Organism |
| TEF | Thoraco-epigastric Flap |
| EOG | Electro-oculogram, Electro-oculography; Electro-olfactogram, Electro-olfactography; Eosinophilic Gastroenteritis; Ethylene Oxide Gas |
| GTB | Gastrointestinal Tract Bleeding |
| GE | Gastroenterostomy |
| SIS | Small Intestinal Submucosa |
| IVR | Intestinal Vascular Resistance |
| UGIS | Upper Gastrointestinal Series |
| GF | Gastric Fistula |
| GO | Gastro-[o]esophageal; Geroderma Osteodysplastica; Glutamic Oxylacetic [acid]; Gonorrhea; Glucose Oxidase |
| IBDLIST | Inflammatory Bowel Disease List [database] |
| ECTA | Esophageal Gastric Tube Airway; Everyman's Contingency Table Analysis |
| NGR | Narrow Gauze Roll; Nasogastric Replacement |
| EGDS | Esophagogastric Devascularization With Splenectomy |
| GD | Gastroparesis Diabeticorum |
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