| GPWW | group practice without wall |
|---|---|
| GRABS | group A beta-hemolytic streptococcal pharyngitis |
| GREPCO | Rome Group for the Epidemiology and Prevention of Cholelithiasis |
| gs | group specific |
| GSA | general somatic afferent; group-specific antigen; Gross virus antigen; guanidinosuccinic acid |