| Abbreviations | Meaning |
 | GS | Gastrocnemius |
| IO | Intestinal Obstruction |
| DGR | Duodenogastric Reflux |
| NG | Nasogastric; Neisseria Gonorrhoeae; Neoplastic Growth; New Growth; Nitroglycerin; Nodose Ganglion; No Growth; Not Given |
| GIP | Gastric Inhibitory Peptide |
| PAIN | Pyoderma Gangrenosum, Aphthous Stomatitis, Inflammatory Eye Disease, Erythema Nodosum [disorders Associated With Inflammatory Bowel Disease] |
| EG | Electrogram; Enteroglucagon; Eosinophilic Granuloma; Erb-Goldflam [syndrome]; Esophagogastrectomy; Esophagogastric; Ethylene Glycol; External Genitalia |
| IBD | Inflammatory Bowel Disease |
| SBFT | Small Bowel Follow-through |
| GIT | Gastrointestinal Tract |
| SBE | Small Bowel Enema |
| GDU | Gastroduodenal Ulcer |
| HEI | Human Embryonic Intestine [cells] |
| FIFR | Fasting Intestinal Flow Rate |
| GTB | Gastrointestinal Tract Bleeding |
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