| HFD | hemorrhagic fever of deer; high-fiber diet; high forceps delivery; hospital field director; human fa... |
|---|---|
| RF | radial fiber; radio frequency; receptive field; regurgitant fraction; Reitland-Franklin [unit]; rela... |
| RVF | renal vascular failure; Rift Valley fever; right ventricular failure; right visual field |
| VHF | very high frequency; viral hemorrhagic fever; visual half-field |
| B1 | induced field in magnetic resonance imaging; radiofrequency magnetic field in nuclear magnetic reson... |