| GIBF | gastrointestinal bacterial flora |
|---|---|
| GICA | gastrointestinal cancer |
| GIH | gastrointestinal hemorrhage; growth-inhibiting hormone |
| GII | gastrointestinal infection |
| GIS | gas in stomach; gastrointestinal series; geographic information system; guaranteed income supplement... |
| UGIB | Upper gastrointestinal bleeding |
|---|---|
| UGIH | Upper gastrointestinal hemorrhage |
| GIT | gastrointestinal transit |