| 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 |
| FHF | Fulminant Hepatic Failure |
| AHF | acute heart failure; American Health Foundation; American Hepatic Foundation; American Hospital Form... |
| FHF | fetal heart frequency; fulminant hepatic failure |