United States (USA) (US)

American College of Radiology University / College Reston, VA American College of Rheumatology Scientific academy / society / association Atlanta American Dental Association (ADA) Association Chicago American Heart Association (AHA) Association Dallas American Iron and Steel Institute (AISI) Association Washington, DC American Joint Committee on Cancer (AJCC) Association Chicago American Medical Group Association (AMGA) Association Alexandria, VA American Museum of Natural History (AMNH) others New York, NY American Red Cross (ARC) / American National Red Cross others Washington D.C. American Society of Clinical Oncology (ASCO) Association Alexandria, VA