| FREIR | Federal Research on Biological and Health Effects of Ionizing Radiation |
|---|---|
| HEEP | health effects of environmental pollutants |
| HEI | Health Effects Institute; high-energy intermediate; homogenous enzyme immunoassay; human embryonic i... |
| HEIR | health effects of ionizing radiation; high-energy ionizing radiation |
| Q-TWIST | quality-adjusted time without symptoms of disease and subjective toxic effects of treatment |