| PEI | Patient Exit Interview; phosphate excretion index; physical efficiency index; polyethyleneimine |
|---|---|
| PEx | physical examination |
| PH | parathyroid hormone; partial hepatectomy; partial hysterectomy; passive hemagglutination; past histo... |
| PhTD | Doctor of Physical Therapy |
| PHY | pharyngitis; physical; physiology |