| RF | radial fiber; radio frequency; receptive field; regurgitant fraction; Reitland-Franklin [unit]; rela... |
|---|---|
| RRC | residency review committee; risk reduction component; routine respiratory care; Royal Red Cross; rur... |
| RSM | risk screening model; Royal Society of Medicine |
| NB | New-Born |
| TRNB | Transient Respiratory distress of New Born |