| ER | efficiency ratio; epigastric region; ejection rate; electroresection; emergency room; endoplasmic re... |
|---|---|
| ERT | esophageal radionuclide transit; estrogen replacement therapy; examination room terminal; external r... |
| GOR | gastroesophageal reflux; general operating room |
| IHRA | isocapnic hyperventilation with room air |
| LAFR | laminar air flow room |