| AHA | acetohydroxamic acid; acquired hemolytic anemia; acute hemolytic anemia; American Heart Association;... |
|---|---|
| ALA | American Laryngological Association; American Lung Association; aminolevulinic acid; axiolabial |
| AMM | agnogenic myeloid metaplasia; ammonia; antibody to murine cardiac myosin; World Medical Association ... |
| AMWA | American Medical Women's Association; American Medical Writers' Association |
| APHA | American Protestant Hospital Association; American Public Health Association |