| PF | pair feeding; peak flow; perfusion fluid; pericardial fluid; periosteal fibroblast; peritoneal fluid... |
|---|---|
| PFQ | personality factor questionnaire |
| PI | first meiotic prophase; isoelectric point; pacing impulse; package insert; pancreatic insufficiency;... |
| PIC | Personality Inventory for Children; polymorphism information content |
| PRS | Personality Rating Scale; Pierre Robin syndrome; plasma renin substrate; proctorectosigmoidoscopy |