| AASK | African American Study of Kidney Diseases and Hypertension Pilot Study |
|---|---|
| A&B | apnea and bradycardia |
| ABBQ | Acquired Immunodeficiency Syndrome Beliefs and Behavior Questionnaire |
| A&BC | air and bone conduction |
| ABD | abdomen; aged, blind, and disabled; aggressive behavioral disturbance; average body dose |