| Abbreviations | Meaning |
 | AGA | Accelerated Growth Area; Allergic Granulomatosis And Angiitis; American Gastroenterological Association; American Genetic Association |
 | GIBF | Gastrointestinal Bacterial Flora |
 | GTB | Gastrointestinal Tract Bleeding |
 | FIFR | Fasting Intestinal Flow Rate |
 | GIP | Gastric Inhibitory Peptide |
 | GDU | Gastroduodenal Ulcer |
 | SBFT | Small Bowel Follow-through |
 | GD | Gastroduodenal |
 | UGIB | Upper Gastrointestinal Bleeding |
 | IVR | Intestinal Vascular Resistance |
 | GA | Gastric Analysis; General Appearance |
 | GMBF | Gastric Mucosa Blood Flow |
 | N-CAP | Nifedipine Gastrointestinal Therapeutic System Circadian Anti-Ischemic Program |
 | GIB | Gastrointestinal Bleeding |
 | BDQ | Bowel Disease Questionnaire |