| Abbreviations | Meaning |
 | ADRDA | Alzheimer Disease And Related Disorders Association |
| ABOS | American Board Of Orthopaedic Surgery |
| HDA | Heteroduplex Analysis; Huntington Disease Association; Hydroxydopamine |
| AAP | American Association Of Pathologists |
| BCA | Blue Cross Association |
| AHA | American Heart Association |
| AST | Association Of Surgical Technologists |
| VACTERL | Vertebral Abnormalities, Anal Atresia, Cardiac Abnormalities, Tracheoesophageal Fistula And/or Esophageal Atresia, Renal Agenesis And Dysplasia, And Limb Defects [association] |
| APS | American Proctologic Society |
| ASCMS | American Society Of Contemporary Medicine And Surgery |
| SIOP | International Society Of Paediatric Oncology |
| NAHG | National Association Of Humanistic Gerontology |
| HIMA | Health Industry Manufacturers Association |
| AASS | American Association For Social Security |
| NAHSA | National Association For Hearing And Speech Action |
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