| AIDSDRUGS | clinical trials of acquired immunodeficiency drugs [MEDLARS data base] |
|---|---|
| AIDSTRIALS | clinical trials of acquired immunodeficiency syndrome drugs [MEDLARS data base] |
| ASCH | American Society of Clinical Hypnosis |
| ASCLT | American Society of Clinical Laboratory Technicians |
| ASCO | American Society of Clinical Oncology; American Society of Contemporary Ophthalmology |