| AACIA | American Association for Clinical Immunology and Allergy |
|---|---|
| AACT | American Academy of Clinical Toxicology |
| ABCN | American Board of Clinical Neuropsychology |
| ACA | abnormal coronary artery; acrodermatitis chronica atrophicans; acute cerebellar ataxia; adenocarcino... |
| ACACN | American Council of Applied Clinical Nutrition |