Professional organizations Abbreviations and Acronyms
- ABTSAmerican Board of Thoracic Surgery
- ABUAmerican Board of Urology
- ABUAssociation of Banyan Users
- ACAAmerican Chiropractic Association
- ACAAIAmerican College of Allergy, Asthma and Immunology
- ACACAmerican Council for Accredited Certification
- ACAOMAccreditation Commission for Acupuncture and Oriental Medicine
- ACAPSAmerican Council of Academic Plastic Surgeons
- ACASAssociate of Casualty Actuatial Society
- ACBSAssociation for Contextual Behavioral Science
- ACCAmerican College of Cardiology
- ACCAAmerican College of Cardiovascular Administrators
- ACCAAssociation of Commonwealth and Chinese Accountants
- ACCCAmerican College of Chiropractic Consultants
- ACCIAssociation of Crafts Creative Industries
- ACCMEAccreditation Council for Continuing Medical Education
- ACCPAmerican College of Chest Physicians
- ACCPAmerican College of Clinical Pharmacology
- ACCPAmerican College of Contingency Planners
- ACDAmerican College of Dentists
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