| ACMS | American Chinese Medical Society |
|---|---|
| ADDS | American Digestive Disease Society |
| AFS | acquired or adult Fanconi syndrome; alternative financing system; American Fertility Society; antifi... |
| AGOS | American Gynecological and Obstetrical Society |
| AGS | adrenogenital syndrome; Alagille syndrome; American Geriatrics Society; audiogenic seizures |
| S.I.O.P. | Society of Paediatric Oncology |
|---|---|
| SIOP | Society of Pediatric Oncology |
| STS | Society of Thoracic Surgeons |