| IAMM | International Association of Medical Museums |
|---|---|
| IMIA | International Medical Informatics Association |
| MAAGB | Medical Artists Association of Great Britain |
| MASA | Medical Association of South Africa; mental retardation-aphasia-shuffling gait-adducted thumbs [synd... |
| MCA | major coronary artery; Maternity Center Association; medical care administration; methylcholanthrene... |