| EOP | efficiency of plating; emergency outpatient |
|---|---|
| EPCS | emergency portocaval shunt |
| EPR | early progressive resistance; electron paramagnetic resonance; electronic patient record; electrophr... |
| ER | efficiency ratio; epigastric region; ejection rate; electroresection; emergency room; endoplasmic re... |
| ES | ejection sound; elastic stocking; electrical stimulus, electrical stimulation; electroshock; emergen... |