| AMSRDC | Army Medical Service Research and Development Command |
|---|---|
| AOR | Alvarado Orthopedic Research [instruments]; auditory oculogyric reflex |
| APRL | American Prosthetic Research Laboratory |
| ARCI | Addiction Research Center Inventory |
| ARF | acute renal failure; acute respiratory failure; acute rheumatic fever; Addiction Research Foundation... |