| Abbreviations | Meaning |
 | FGDS | Fibrogastroduodenoscopy |
| GEF | Gastroesophageal Fundoplication; Glossoepiglottic Fold; Gonadotropin Enhancing Factor; Guanosine Nucleotide Exchange Factor |
| GBD | Granulomatous Bowel Disease |
| NGT | Nasogastric Tube; Nominal Group Technique; Normal Glucose Tolerance |
| MIN | Medial Interlaminar Nucleus; Medical Information Network; Multiple Intestinal Neoplasia |
| UGIS | Upper Gastrointestinal Series |
| BCOC | Bowel Care Of Choice |
| VIPOMA | Vasoactive Intestinal Polypeptide-secreting Tumor |
| CIIPX | [X-linked] Chronic Idiopathic Intestinal Pseudo-obstruction |
| FACG | Fellow Of The American College Of Gastroenterology |
| JGI | Jejunogastric Intussusception; Juxtaglomerular Granulation Index |
| NHGJ | Normal Human Gastric Juice |
| ESGE | European Society For Gastrointestinal Endoscopy |
| AUGH | Acute Upper Gastrointestinal Hemorrhage |
| OGD | [o]esophago-gastro-duodenoscopy |
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