| APHA | American Protestant Hospital Association; American Public Health Association |
|---|---|
| FAPA | Fellow of the American Psychiatric Association; Fellow of the American Psychoanalytical Association |
| AAA | abdominal aortic aneurysm/aneurysmectomy; acne-associated arthritis; acquired aplastic anemia; acute... |
| ACS | acrocallosal syndrome; acrocephalosyndactyly; acute chest syndrome; acute confusional state; Alcon C... |
| NAEMSP | National Association of Emergency Medical Services Physicians |