| OPM | occult primary malignancy; Office of Personnel Management; ophthalmoplegic migraine |
|---|---|
| PACC | primary ambulatory care center; promoting aphasics' communicative competence |
| PAD | pain and distress; patient surface axis depth; percutaneous abscess drainage; percutaneous automated... |
| PAGMK | primary African green monkey kidney |
| PAM | pancreatic acinar mass; penicillin aluminum monostearate; peptidylglycine alpha-amidating monooxygen... |