| AAOHN | American Association of Occupational Health Nurses |
|---|---|
| AAOPP | American Association of Osteopathic Postgraduate Physicians |
| AAPB | American Association of Pathologists and Bacteriologists |
| AAPCC | adjusted annual per capita cost; adjusted average per capita cost; American Association of Poison Co... |
| AAPHD | American Association of Public Health Dentists |