| APA | action potential amplitude; aldosterone-producing adenoma; Ambulatory Pediatric Association; America... |
|---|---|
| QCIM | Quarterly Cumulative Index Medicus |
| ANA | acetylneuraminic acid; American Narcolepsy Association; American Neurological Association; American ... |
| AAP | air at atmospheric pressure; American Academy of Pediatrics; American Academy of Pedodontics; Americ... |
| IPA | immunoperoxidase assay; incontinentia pigmenti achromians; independent physician or practice associa... |