| PF | pair feeding; peak flow; perfusion fluid; pericardial fluid; periosteal fibroblast; peritoneal fluid... |
|---|---|
| ERA | electrical response activity; electroencephalic response audiometry; Electroshock Research Associati... |
| RR | radiation reaction; radiation response; rate ratio; rational recovery [group]; recovery room; relati... |
| PAF | paroxysmal atrial fibrillation; peroxisomal assembly factor; phosphodiesterase-activating factor; pl... |
| SF | Sabin-Feldman [test]; safety factor; salt-free; scarlet fever; screen film; seminal fluid; serosal f... |