| UGIS | Upper Gastro-Intestinal Series |
|---|---|
| FMS | fat-mobilizing substance; Fellow of the Medical Society; fibromyalgia syndrome; full mouth series |
| GBS | gallbladder series; gastric bypass surgery; group B Streptococcus; general biopsychosocial screening... |
| GIS | gas in stomach; gastrointestinal series; geographic information system; guaranteed income supplement... |
| LFS | lateral facet syndrome; Li-Fraumeni syndrome; limbic forebrain structure; liver function series |