| Abbreviations | Meaning |
 | GR | Gastric Resection |
| IBDQ | Inflammatory Bowel Disease Questionnaire |
| HIPO | Hemihypertrophy, Intestinal Web, Preauricular Skin Tag, And Congenital Corneal Opacity [syndrome]; Hospital Indicator For Physicians Orders |
| EGE | Eosinophilic Gastroenteritis |
| GDA | Gastroduodenal Artery; General Daily Activity; Germine Diacetate; Graves Disease Autoantigen |
| MMIHS | Megacystis-microcolon-intestinal Hypoperistalsis Syndrome |
| IRBP | Intestinal Retinol-binding Protein |
| IIP | Idiopathic Interstitial Pneumonia; Idiopathic Intestinal Pseudo-obstruction; Increased Intracranial Pressure |
| SIM | Specialized Intestinal Metaplasia |
| GD | Gastroduodenal |
| IO | Incisal Opening; Inferior Oblique; Inferior Olive; Internal Os; Interorbital; Intestinal Obstruction; Intraocular; Intraoperative; Intra-osseous |
| GER | Gas Exchange Region; Gastroesophageal Reflux; Geriatrics; Granular Endoplasmic Reticulum |
| SBFT | Small Bowel Follow-through |
| LBO | Large Bowel Obstruction |
| PGA | Pancreaticogastrostomy |
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