| ASI | addiction severity index; anxiety state inventory; anxiety status inventory; arthroscopic screw inst... |
|---|---|
| AAA | abdominal aortic aneurysm/aneurysmectomy; acne-associated arthritis; acquired aplastic anemia; acute... |
| ACT | achievement through counseling and treatment; actin; actinomycin; activated clotting time; advanced ... |
| AI | accidental injury; accidentally incurred; adiposity index; aggregation index; allergy and immunology... |
| AMT | acute miliary tuberculosis; alpha-methyltyrosine; American Medical Technologists; amethopterin; amit... |