| PE | Edinburgh Pharmacopoeia; pancreatic extract; paper electrophoresis; partial epilepsy; pelvic examina... |
|---|---|
| ORS | olfactory reference syndrome; oral rehydration solution; oral surgery, oral surgeon; Orthopaedic Res... |
| B&W | black and white [milk of magnesia and cascara extract] |
| NRI | nerve root involvement; nerve root irritation; nonrespiratory infection |
| APE | acetone powder extract; acute polioencephalitis; acute psychotic episode; airway pressure excursion;... |