AAN - Associate of Arts in Nursing 
AART - American Registry for Radiologi… 
AAS - Associate in Applied Science 
AB - Associate in Business 
ACE - Advocate for Children with Excep… 
ACLS - Advanced Cardiac Life Support 
AD - Alzheimer's disease 
AD - associate degree 
ADA - American Diabetes Association 
ADA - American Dietic Association 
ADC - Adult Disabled Children 
ADD - Administration on Developmental… 
ADD - Attention Deficit Disorder 
ADHD - Attention Deficit Hyperactivity… 
ADL - Activities of Daily Living 
ADN - Associate Degree in Nursing 
ADPD - Alzheimer's Disease and Parkins… 
AERS - Adverse Event Reporting System 
AFDC - Aid to Families with Dependent… 
AFI - Assets for Independence 
AFS - Arbeitsgemeinschaft Freier Still… 
AGE - Arbeitsgemeinschaft Gynäkologisc… 
AHCA - Agency of Health Care Administr… 
AHRQ - Agency for Healthcare Research… 
AI/AN - American Indian and Alaska Nat… 
ALS - Amyotrophe Lateralsklerose 
ALS - Amyotrophic Lateral Sclerosis 
ALZA - ALZA Pharmaceuticals 
AMD - Altersabhängige Makuladegenerati… 
AMDF - Ataxia, Myoclonus and Deafness