| ARF | acute renal failure; acute respiratory failure; acute rheumatic fever; Addiction Research Foundation... |
|---|---|
| ARM | adrenergic receptor material; aerosol rebreathing method; ambulatory renal monitor; anorectal manome... |
| ARN | acute renal necrosis; acute retinal necrosis; arcuate nucleus; Association of Rehabilitation Nurses |
| BOR | basal optic root; before time of operation; bowels open regularly; branchio-oto-renal [syndrome] |
| BRA | bilateral renal agenesis; bone-resorbing activity; brain-reactive antibody |