| AMA | against medical advice; alkaline membrane assay; American Management Association; American Medical A... |
|---|---|
| AMSA | acridinylamine methanesulfon-m-anisidide; American Medical Society on Alcoholism; American Medical S... |
| AMWA | American Medical Women's Association; American Medical Writers' Association |
| AOCR | American Osteopathic College of Radiology; American Osteopathic College of Rheumatology |
| AOS | American Ophthalmological Society; American Otological Society; anodal opening sound; anterior [o]es... |