United States (USA) (US)

American Astronomical Society Research / Science organisation Washington, DC American Cancer Society Industry / private company Atlanta, GA American College of Cardiology Association Washington D.C. American College of Radiology University / College Reston, VA American College of Rheumatology Scientific academy / society / association Atlanta American Dental Association (ADA) Association Chicago American Health Network of Indiana LLC (AHN) Hospital Indianapolis American Heart Association (AHA) Association Dallas American Iron and Steel Institute (AISI) Association Washington, DC American Joint Committee on Cancer (AJCC) Association Chicago