| GPA | Goodpasture antigen; grade point average; Group Practice Association; guinea pig albumin |
|---|---|
| GPCI | geographic practice cost index |
| GPWW | group practice without wall |
| HBP | heartbeat period; hepatic binding protein; high blood pressure; hospital-based practice |
| HPA | Health Care Practice Act; Health Policy Agenda for the American People; health promotion advocates; ... |
| ICSD | International Classification of Sleep Disorders |
|---|---|
| ICRU | International Commission of Radiation Units and Measurements |
| ICRP | International Commission of Radiological Protection |
| ICSH | International Committee for Standardisation in Haematology |
| ICRC | International Committee of the Red Cross |