| PDS | pain-dysfunction syndrome; paroxysmal depolarizing shift; patient data system; Patient-Doctor Societ... |
|---|---|
| PF | pair feeding; peak flow; perfusion fluid; pericardial fluid; periosteal fibroblast; peritoneal fluid... |
| PHS | Physicians' Health Study; pooled human serum; posthypnotic suggestion; Public Health Service |
| R1, R2, R3, etc. | years of resident study |
| RFS | relapse-free survival; renal function study; rotating frame spectroscopy |