| OMSA | otitis media, suppurative, acute |
|---|---|
| OMSC | otitis media secretory (or suppurative) chronic |
| SOM | secretory otitis media; sensitivity of method; serous otitis media; somatotropin; state operations m... |
| ATN | Acute Tubular Necrosis |
| AVN | 1) Atrio-Ventricular Node 2) AVascular Necrosis |