| ER | efficiency ratio; epigastric region; ejection rate; electroresection; emergency room; endoplasmic re... |
|---|---|
| ERA | electrical response activity; electroencephalic response audiometry; Electroshock Research Associati... |
| ERD | evoked response detector |
| EVR | evoked visual response; exudative vitreoretinopathy |
| PSVER | pattern shift visual evoked response |