| HAP | Handicapped Aid Program; Hazardous Air Pollutants [List]; hazardous air pollution; health alliance p... |
|---|---|
| HAPE | high-altitude pulmonary edema |
| HAR | high-altitude retinopathy |
| HARH | high-altitude retinal hemorrhage |
| HHCS | high-altitude hypertrophic cardiomyopathy syndrome |